/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:10,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:10,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:10,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:10,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:10,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:10,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:10,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:10,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:10,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:10,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:10,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:10,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:10,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:10,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:10,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:10,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:10,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:10,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:10,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:10,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:10,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:10,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:10,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:10,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:10,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:10,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:10,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:10,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:10,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:10,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:10,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:10,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:10,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:10,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:10,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:10,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:10,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:10,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:10,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:10,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:10,101 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 [2020-09-25 11:17:10,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:10,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:10,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:10,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:10,169 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:10,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:10,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:10,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:10,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:10,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:10,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:10,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:10,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:10,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:10,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:10,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:10,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:10,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:10,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:10,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:10,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:10,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:10,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:10,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:10,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:10,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:10,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:10,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:10,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:10,176 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:17:10,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:10,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:10,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:10,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:10,692 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:10,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 11:17:10,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/787c4d9b1/556f5d4b4e9d4f7398dc1fa8540e29b2/FLAGcf7129b75 [2020-09-25 11:17:11,462 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:11,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 11:17:11,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/787c4d9b1/556f5d4b4e9d4f7398dc1fa8540e29b2/FLAGcf7129b75 [2020-09-25 11:17:11,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/787c4d9b1/556f5d4b4e9d4f7398dc1fa8540e29b2 [2020-09-25 11:17:11,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:11,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:11,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:11,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:11,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:11,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:11" (1/1) ... [2020-09-25 11:17:11,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ad94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:11, skipping insertion in model container [2020-09-25 11:17:11,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:11" (1/1) ... [2020-09-25 11:17:11,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:11,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:12,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:12,358 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:12,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:12,608 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:12,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12 WrapperNode [2020-09-25 11:17:12,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:12,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:12,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:12,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:12,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:12,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:12,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:12,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:12,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (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 [2020-09-25 11:17:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:12,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:14,235 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:14,235 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:14,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:14 BoogieIcfgContainer [2020-09-25 11:17:14,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:14,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:14,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:14,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:14,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:11" (1/3) ... [2020-09-25 11:17:14,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5781497d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:14, skipping insertion in model container [2020-09-25 11:17:14,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (2/3) ... [2020-09-25 11:17:14,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5781497d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:14, skipping insertion in model container [2020-09-25 11:17:14,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:14" (3/3) ... [2020-09-25 11:17:14,255 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 11:17:14,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:14,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:14,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:14,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:14,338 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:14,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:14,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:14,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:14,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:14,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:14,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 11:17:14,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:14,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:14,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:14,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:14,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 11:17:14,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:14,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591839330] [2020-09-25 11:17:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:19,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:17:19,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-09-25 11:17:19,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:19,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:17:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 11:17:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:17:20,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:20,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:20,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:20,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:20,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 11:17:20,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:20,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:20,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:17:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:17:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:20,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591839330] [2020-09-25 11:17:20,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:20,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:17:20,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780310837] [2020-09-25 11:17:20,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:17:20,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:20,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:17:20,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:17:20,223 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:22,597 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 11:17:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:22,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 11:17:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:22,632 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 11:17:22,632 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 11:17:22,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 11:17:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 11:17:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 11:17:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 11:17:22,765 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 116 [2020-09-25 11:17:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:22,766 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 11:17:22,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 11:17:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 11:17:22,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:22,781 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:22,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:22,782 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:22,782 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 11:17:22,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:22,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604312103] [2020-09-25 11:17:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:26,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:27,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:27,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 11:17:27,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:17:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:17:27,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:27,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:17:27,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 11:17:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:27,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:28,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:28,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:17:28,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:28,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:28,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 11:17:28,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:28,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:28,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:17:28,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:28,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:17:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:28,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604312103] [2020-09-25 11:17:28,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:28,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:28,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239287253] [2020-09-25 11:17:28,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:28,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:28,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:28,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:28,109 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 11:17:30,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:30,351 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 11:17:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:30,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 11:17:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:30,363 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 11:17:30,364 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 11:17:30,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:17:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 11:17:30,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 11:17:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 11:17:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 11:17:30,419 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 134 [2020-09-25 11:17:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:30,419 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 11:17:30,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 11:17:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 11:17:30,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:30,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:30,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:30,424 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:30,425 INFO L82 PathProgramCache]: Analyzing trace with hash 817356248, now seen corresponding path program 1 times [2020-09-25 11:17:30,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:30,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016406734] [2020-09-25 11:17:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:34,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 11:17:35,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:17:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 11:17:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:35,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:17:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:17:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:35,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:35,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:35,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:17:35,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:35,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:35,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:35,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:17:35,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:35,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:17:35,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:35,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:35,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:17:35,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:35,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016406734] [2020-09-25 11:17:35,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:35,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:35,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215363466] [2020-09-25 11:17:35,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:35,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:35,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:35,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:35,717 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-25 11:17:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:37,886 INFO L93 Difference]: Finished difference Result 2705 states and 3410 transitions. [2020-09-25 11:17:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:37,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 11:17:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:37,913 INFO L225 Difference]: With dead ends: 2705 [2020-09-25 11:17:37,913 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 11:17:37,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:17:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 11:17:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1648. [2020-09-25 11:17:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-09-25 11:17:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1962 transitions. [2020-09-25 11:17:38,015 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1962 transitions. Word has length 140 [2020-09-25 11:17:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:38,016 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1962 transitions. [2020-09-25 11:17:38,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1962 transitions. [2020-09-25 11:17:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 11:17:38,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:38,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:38,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:38,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:38,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:38,029 INFO L82 PathProgramCache]: Analyzing trace with hash 978323725, now seen corresponding path program 1 times [2020-09-25 11:17:38,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:38,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748365403] [2020-09-25 11:17:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:38,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:39,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:41,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:43,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 11:17:43,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:43,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:17:43,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:43,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:17:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 11:17:43,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:43,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:43,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:43,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:17:43,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:43,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:17:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:17:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:43,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:17:43,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:43,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 11:17:43,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:43,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:17:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:17:43,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:43,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748365403] [2020-09-25 11:17:43,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:43,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:17:43,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330518600] [2020-09-25 11:17:43,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:17:43,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:43,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:17:43,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:17:43,857 INFO L87 Difference]: Start difference. First operand 1648 states and 1962 transitions. Second operand 12 states. [2020-09-25 11:17:44,227 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-09-25 11:17:44,488 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-09-25 11:17:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:48,343 INFO L93 Difference]: Finished difference Result 5241 states and 6739 transitions. [2020-09-25 11:17:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:17:48,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-09-25 11:17:48,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:48,363 INFO L225 Difference]: With dead ends: 5241 [2020-09-25 11:17:48,364 INFO L226 Difference]: Without dead ends: 3178 [2020-09-25 11:17:48,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:17:48,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2020-09-25 11:17:48,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2666. [2020-09-25 11:17:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2666 states. [2020-09-25 11:17:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3094 transitions. [2020-09-25 11:17:48,468 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3094 transitions. Word has length 151 [2020-09-25 11:17:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:48,468 INFO L479 AbstractCegarLoop]: Abstraction has 2666 states and 3094 transitions. [2020-09-25 11:17:48,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:17:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3094 transitions. [2020-09-25 11:17:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 11:17:48,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:48,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:48,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:17:48,477 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:48,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:48,478 INFO L82 PathProgramCache]: Analyzing trace with hash -488871135, now seen corresponding path program 1 times [2020-09-25 11:17:48,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:48,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652732467] [2020-09-25 11:17:48,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:53,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 11:17:53,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4929 [2020-09-25 11:17:53,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:53,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:17:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 11:17:53,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:53,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:53,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:53,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:17:53,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:53,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:54,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:54,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:54,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 11:17:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:54,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:17:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:54,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652732467] [2020-09-25 11:17:54,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:54,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:17:54,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956432629] [2020-09-25 11:17:54,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:17:54,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:54,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:17:54,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:17:54,362 INFO L87 Difference]: Start difference. First operand 2666 states and 3094 transitions. Second operand 10 states. [2020-09-25 11:17:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:57,862 INFO L93 Difference]: Finished difference Result 5651 states and 6760 transitions. [2020-09-25 11:17:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:17:57,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-09-25 11:17:57,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:57,874 INFO L225 Difference]: With dead ends: 5651 [2020-09-25 11:17:57,874 INFO L226 Difference]: Without dead ends: 2109 [2020-09-25 11:17:57,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:17:57,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2020-09-25 11:17:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2069. [2020-09-25 11:17:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2020-09-25 11:17:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2320 transitions. [2020-09-25 11:17:57,940 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2320 transitions. Word has length 154 [2020-09-25 11:17:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:57,940 INFO L479 AbstractCegarLoop]: Abstraction has 2069 states and 2320 transitions. [2020-09-25 11:17:57,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:17:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2320 transitions. [2020-09-25 11:17:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 11:17:57,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:57,947 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:57,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:17:57,948 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:57,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:57,948 INFO L82 PathProgramCache]: Analyzing trace with hash 198974567, now seen corresponding path program 1 times [2020-09-25 11:17:57,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:57,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218592359] [2020-09-25 11:17:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking...