/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:18:33,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:18:33,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:18:33,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:18:33,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:18:33,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:18:33,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:18:33,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:18:33,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:18:33,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:18:33,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:18:33,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:18:33,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:18:33,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:18:33,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:18:33,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:18:33,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:18:33,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:18:33,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:18:33,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:18:33,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:18:33,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:18:33,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:18:33,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:18:33,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:18:33,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:18:33,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:18:33,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:18:33,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:18:33,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:18:33,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:18:33,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:18:33,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:18:33,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:18:33,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:18:33,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:18:33,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:18:33,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:18:33,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:18:33,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:18:33,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:18:33,135 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 [2020-10-29 08:18:33,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:18:33,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:18:33,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:18:33,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:18:33,175 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:18:33,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:18:33,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:18:33,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:18:33,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:18:33,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:18:33,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:18:33,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:18:33,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:18:33,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:18:33,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:18:33,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:18:33,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:18:33,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:18:33,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:18:33,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:18:33,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:18:33,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:18:33,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:18:33,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:18:33,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:18:33,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:18:33,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:18:33,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:18:33,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:18:33,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:18:33,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:18:33,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:18:33,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:18:33,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:18:33,704 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:18:33,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label32.c [2020-10-29 08:18:33,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cc65894f/d5b81ae8d4c3458593731b05d5b5be1c/FLAG0b19a1ad5 [2020-10-29 08:18:34,861 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:18:34,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label32.c [2020-10-29 08:18:34,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cc65894f/d5b81ae8d4c3458593731b05d5b5be1c/FLAG0b19a1ad5 [2020-10-29 08:18:35,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9cc65894f/d5b81ae8d4c3458593731b05d5b5be1c [2020-10-29 08:18:35,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:18:35,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:18:35,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:18:35,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:18:35,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:18:35,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:18:35" (1/1) ... [2020-10-29 08:18:35,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9a9cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:35, skipping insertion in model container [2020-10-29 08:18:35,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:18:35" (1/1) ... [2020-10-29 08:18:35,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:18:35,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:18:36,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:18:36,680 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:18:37,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:18:37,334 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:18:37,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37 WrapperNode [2020-10-29 08:18:37,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:18:37,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:18:37,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:18:37,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:18:37,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (1/1) ... [2020-10-29 08:18:37,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (1/1) ... [2020-10-29 08:18:37,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (1/1) ... [2020-10-29 08:18:37,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (1/1) ... [2020-10-29 08:18:37,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (1/1) ... [2020-10-29 08:18:37,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (1/1) ... [2020-10-29 08:18:37,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (1/1) ... [2020-10-29 08:18:37,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:18:37,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:18:37,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:18:37,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:18:37,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (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 [2020-10-29 08:18:37,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:18:37,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:18:37,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:18:37,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:18:37,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:18:37,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:18:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:18:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:18:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:18:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:18:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:18:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:18:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:18:37,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:18:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:18:47,995 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:18:47,995 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:18:47,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:18:47 BoogieIcfgContainer [2020-10-29 08:18:47,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:18:48,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:18:48,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:18:48,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:18:48,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:18:35" (1/3) ... [2020-10-29 08:18:48,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f85555f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:18:48, skipping insertion in model container [2020-10-29 08:18:48,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:37" (2/3) ... [2020-10-29 08:18:48,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f85555f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:18:48, skipping insertion in model container [2020-10-29 08:18:48,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:18:47" (3/3) ... [2020-10-29 08:18:48,010 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label32.c [2020-10-29 08:18:48,024 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:18:48,031 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:18:48,047 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:18:48,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:18:48,123 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:18:48,123 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:18:48,123 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:18:48,123 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:18:48,123 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:18:48,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:18:48,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:18:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:18:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 08:18:48,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:48,190 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] [2020-10-29 08:18:48,191 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1802174069, now seen corresponding path program 1 times [2020-10-29 08:18:48,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:48,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87955773] [2020-10-29 08:18:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:49,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:49,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 08:18:49,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-29 08:18:49,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:49,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:18:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:18:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 08:18:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:18:49,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:49,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:49,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:49,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:18:49,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:49,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:18:49,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:18:49,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87955773] [2020-10-29 08:18:49,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:18:49,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:18:49,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154025674] [2020-10-29 08:18:49,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:18:49,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:49,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:18:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:18:49,652 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:19:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:05,016 INFO L93 Difference]: Finished difference Result 1695 states and 3092 transitions. [2020-10-29 08:19:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:19:05,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-29 08:19:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:05,048 INFO L225 Difference]: With dead ends: 1695 [2020-10-29 08:19:05,049 INFO L226 Difference]: Without dead ends: 1011 [2020-10-29 08:19:05,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:19:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-29 08:19:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1004. [2020-10-29 08:19:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-29 08:19:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1500 transitions. [2020-10-29 08:19:05,223 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1500 transitions. Word has length 55 [2020-10-29 08:19:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:05,224 INFO L481 AbstractCegarLoop]: Abstraction has 1004 states and 1500 transitions. [2020-10-29 08:19:05,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:19:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1500 transitions. [2020-10-29 08:19:05,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 08:19:05,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:05,232 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:19:05,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:19:05,233 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:05,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1931613503, now seen corresponding path program 1 times [2020-10-29 08:19:05,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:05,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900272560] [2020-10-29 08:19:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:05,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:05,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:08,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:08,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 08:19:08,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:19:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-10-29 08:19:08,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:08,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:19:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:08,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:19:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:19:08,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:08,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:08,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:08,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:08,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:19:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:08,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:19:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:08,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:08,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:19:08,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:08,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 08:19:08,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:08,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:08,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:19:08,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:08,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:19:08,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:19:09,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900272560] [2020-10-29 08:19:09,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:19:09,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:19:09,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560847009] [2020-10-29 08:19:09,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:19:09,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:09,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:19:09,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:19:09,164 INFO L87 Difference]: Start difference. First operand 1004 states and 1500 transitions. Second operand 8 states. [2020-10-29 08:19:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:35,560 INFO L93 Difference]: Finished difference Result 3893 states and 5934 transitions. [2020-10-29 08:19:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:19:35,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-29 08:19:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:35,583 INFO L225 Difference]: With dead ends: 3893 [2020-10-29 08:19:35,583 INFO L226 Difference]: Without dead ends: 2895 [2020-10-29 08:19:35,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:19:35,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-10-29 08:19:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2835. [2020-10-29 08:19:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2835 states. [2020-10-29 08:19:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3977 transitions. [2020-10-29 08:19:35,704 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3977 transitions. Word has length 129 [2020-10-29 08:19:35,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:35,705 INFO L481 AbstractCegarLoop]: Abstraction has 2835 states and 3977 transitions. [2020-10-29 08:19:35,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:19:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3977 transitions. [2020-10-29 08:19:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 08:19:35,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:35,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:19:35,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:19:35,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:35,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:35,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1551819026, now seen corresponding path program 1 times [2020-10-29 08:19:35,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:35,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137960684] [2020-10-29 08:19:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:35,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:37,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:38,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:38,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:19:38,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:19:38,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2688 [2020-10-29 08:19:38,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:38,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:38,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:19:38,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:38,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:19:38,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:38,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:38,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:38,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:38,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:38,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:19:38,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:38,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:38,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:39,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:39,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 08:19:39,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:19:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 08:19:39,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:39,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:19:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:19:39,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137960684] [2020-10-29 08:19:39,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:19:39,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:19:39,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236087620] [2020-10-29 08:19:39,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:19:39,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:39,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:19:39,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:19:39,187 INFO L87 Difference]: Start difference. First operand 2835 states and 3977 transitions. Second operand 7 states. [2020-10-29 08:19:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:55,410 INFO L93 Difference]: Finished difference Result 6247 states and 8705 transitions. [2020-10-29 08:19:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:19:55,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-29 08:19:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:55,443 INFO L225 Difference]: With dead ends: 6247 [2020-10-29 08:19:55,443 INFO L226 Difference]: Without dead ends: 3418 [2020-10-29 08:19:55,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:19:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2020-10-29 08:19:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3357. [2020-10-29 08:19:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3357 states. [2020-10-29 08:19:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 4583 transitions. [2020-10-29 08:19:55,595 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 4583 transitions. Word has length 151 [2020-10-29 08:19:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:55,601 INFO L481 AbstractCegarLoop]: Abstraction has 3357 states and 4583 transitions. [2020-10-29 08:19:55,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:19:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 4583 transitions. [2020-10-29 08:19:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 08:19:55,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:55,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:19:55,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:19:55,612 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:55,613 INFO L82 PathProgramCache]: Analyzing trace with hash 71380029, now seen corresponding path program 1 times [2020-10-29 08:19:55,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:55,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773441272] [2020-10-29 08:19:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:55,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:57,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 08:19:57,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:19:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2218 [2020-10-29 08:19:57,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:57,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:19:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:57,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 08:19:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:58,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:58,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:58,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:19:58,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:58,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:58,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:19:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-29 08:19:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:58,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:19:58,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:19:58,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773441272] [2020-10-29 08:19:58,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:19:58,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:19:58,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813613874] [2020-10-29 08:19:58,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:19:58,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:58,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:19:58,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:19:58,792 INFO L87 Difference]: Start difference. First operand 3357 states and 4583 transitions. Second operand 7 states. [2020-10-29 08:20:00,431 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 08:20:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:14,095 INFO L93 Difference]: Finished difference Result 6411 states and 8908 transitions. [2020-10-29 08:20:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:20:14,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-29 08:20:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:14,128 INFO L225 Difference]: With dead ends: 6411 [2020-10-29 08:20:14,129 INFO L226 Difference]: Without dead ends: 3493 [2020-10-29 08:20:14,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:20:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2020-10-29 08:20:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 3391. [2020-10-29 08:20:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3391 states. [2020-10-29 08:20:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 4607 transitions. [2020-10-29 08:20:14,285 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 4607 transitions. Word has length 164 [2020-10-29 08:20:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:14,285 INFO L481 AbstractCegarLoop]: Abstraction has 3391 states and 4607 transitions. [2020-10-29 08:20:14,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:20:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 4607 transitions. [2020-10-29 08:20:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 08:20:14,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:14,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:14,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:20:14,291 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash -632608198, now seen corresponding path program 1 times [2020-10-29 08:20:14,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:14,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131497381] [2020-10-29 08:20:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 08:20:19,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:20:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 08:20:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:19,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:20:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:20:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 08:20:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:19,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:19,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:19,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:20:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:19,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:20:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:19,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:20:19,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:20:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 08:20:19,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:19,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:20:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:20:19,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 08:20:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:19,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:19,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:20:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 08:20:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:19,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:20:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:20:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:20:20,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131497381] [2020-10-29 08:20:20,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:20:20,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:20:20,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087336396] [2020-10-29 08:20:20,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:20:20,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:20,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:20:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:20:20,099 INFO L87 Difference]: Start difference. First operand 3391 states and 4607 transitions. Second operand 7 states. [2020-10-29 08:20:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:37,775 INFO L93 Difference]: Finished difference Result 9207 states and 13048 transitions. [2020-10-29 08:20:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:20:37,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-29 08:20:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:37,806 INFO L225 Difference]: With dead ends: 9207 [2020-10-29 08:20:37,807 INFO L226 Difference]: Without dead ends: 5311 [2020-10-29 08:20:37,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:20:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2020-10-29 08:20:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 4752. [2020-10-29 08:20:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4752 states. [2020-10-29 08:20:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 5826 transitions. [2020-10-29 08:20:37,980 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 5826 transitions. Word has length 202 [2020-10-29 08:20:37,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:37,980 INFO L481 AbstractCegarLoop]: Abstraction has 4752 states and 5826 transitions. [2020-10-29 08:20:37,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:20:37,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 5826 transitions. [2020-10-29 08:20:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 08:20:37,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:37,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:37,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:20:37,985 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:37,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2091739153, now seen corresponding path program 1 times [2020-10-29 08:20:37,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:37,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157504141] [2020-10-29 08:20:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:38,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:38,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 08:20:38,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:20:38,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-29 08:20:38,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:38,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:20:38,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:20:38,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:39,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:39,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:39,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:39,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:20:39,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:39,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:20:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:20:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:39,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:39,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:20:39,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 08:20:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:39,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:20:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:39,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:20:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:39,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:39,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:20:39,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 08:20:39,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:39,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:20:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:20:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:20:39,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157504141] [2020-10-29 08:20:39,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:20:39,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:20:39,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672542677] [2020-10-29 08:20:39,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:20:39,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:39,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:20:39,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:20:39,591 INFO L87 Difference]: Start difference. First operand 4752 states and 5826 transitions. Second operand 7 states. [2020-10-29 08:20:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:57,366 INFO L93 Difference]: Finished difference Result 11808 states and 15186 transitions. [2020-10-29 08:20:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:20:57,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-29 08:20:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:57,409 INFO L225 Difference]: With dead ends: 11808 [2020-10-29 08:20:57,409 INFO L226 Difference]: Without dead ends: 7062 [2020-10-29 08:20:57,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:20:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2020-10-29 08:20:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 7031. [2020-10-29 08:20:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7031 states. [2020-10-29 08:20:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 8803 transitions. [2020-10-29 08:20:57,632 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 8803 transitions. Word has length 215 [2020-10-29 08:20:57,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:57,633 INFO L481 AbstractCegarLoop]: Abstraction has 7031 states and 8803 transitions. [2020-10-29 08:20:57,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:20:57,633 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 8803 transitions. [2020-10-29 08:20:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 08:20:57,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:57,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:57,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:20:57,637 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:57,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:57,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1826782163, now seen corresponding path program 1 times [2020-10-29 08:20:57,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:57,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297546321] [2020-10-29 08:20:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:57,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:02,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:02,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-29 08:21:02,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:21:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 08:21:02,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:02,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:21:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:21:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:21:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:02,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:02,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:02,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 08:21:02,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:02,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:21:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:03,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:03,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:21:03,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:03,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 08:21:03,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:03,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:21:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:03,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:21:03,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:21:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:21:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 08:21:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:03,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:21:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 08:21:03,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297546321] [2020-10-29 08:21:03,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:03,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:21:03,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816031034] [2020-10-29 08:21:03,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:21:03,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:03,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:21:03,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:21:03,627 INFO L87 Difference]: Start difference. First operand 7031 states and 8803 transitions. Second operand 9 states. [2020-10-29 08:21:40,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:40,523 INFO L93 Difference]: Finished difference Result 21594 states and 29041 transitions. [2020-10-29 08:21:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 08:21:40,526 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 217 [2020-10-29 08:21:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:40,593 INFO L225 Difference]: With dead ends: 21594 [2020-10-29 08:21:40,594 INFO L226 Difference]: Without dead ends: 13628 [2020-10-29 08:21:40,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-29 08:21:40,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13628 states. [2020-10-29 08:21:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13628 to 13516. [2020-10-29 08:21:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13516 states. [2020-10-29 08:21:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 17349 transitions. [2020-10-29 08:21:41,072 INFO L78 Accepts]: Start accepts. Automaton has 13516 states and 17349 transitions. Word has length 217 [2020-10-29 08:21:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:41,073 INFO L481 AbstractCegarLoop]: Abstraction has 13516 states and 17349 transitions. [2020-10-29 08:21:41,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:21:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 13516 states and 17349 transitions. [2020-10-29 08:21:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-29 08:21:41,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:41,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:21:41,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:21:41,078 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:41,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1586927773, now seen corresponding path program 1 times [2020-10-29 08:21:41,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:41,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140211911] [2020-10-29 08:21:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:46,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:46,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-29 08:21:46,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:21:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 08:21:46,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:46,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:21:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:21:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 08:21:46,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:46,441 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:21:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:46,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:46,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:46,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:21:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:46,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:21:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:21:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:46,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:46,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:46,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:21:46,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 08:21:46,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:46,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:46,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:46,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:21:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:21:46,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:21:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:47,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:47,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:21:47,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:21:47,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-29 08:21:47,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:47,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:21:47,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:21:47,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140211911] [2020-10-29 08:21:47,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:47,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:21:47,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991723902] [2020-10-29 08:21:47,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:21:47,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:47,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:21:47,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:21:47,167 INFO L87 Difference]: Start difference. First operand 13516 states and 17349 transitions. Second operand 6 states. [2020-10-29 08:21:48,085 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:22:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:05,921 INFO L93 Difference]: Finished difference Result 27051 states and 35231 transitions. [2020-10-29 08:22:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:22:05,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2020-10-29 08:22:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:05,983 INFO L225 Difference]: With dead ends: 27051 [2020-10-29 08:22:05,984 INFO L226 Difference]: Without dead ends: 13974 [2020-10-29 08:22:06,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:22:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13974 states. [2020-10-29 08:22:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13974 to 13956. [2020-10-29 08:22:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13956 states. [2020-10-29 08:22:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13956 states to 13956 states and 18197 transitions. [2020-10-29 08:22:06,452 INFO L78 Accepts]: Start accepts. Automaton has 13956 states and 18197 transitions. Word has length 228 [2020-10-29 08:22:06,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:06,453 INFO L481 AbstractCegarLoop]: Abstraction has 13956 states and 18197 transitions. [2020-10-29 08:22:06,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:22:06,453 INFO L276 IsEmpty]: Start isEmpty. Operand 13956 states and 18197 transitions. [2020-10-29 08:22:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 08:22:06,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:06,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:22:06,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:22:06,463 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:06,463 INFO L82 PathProgramCache]: Analyzing trace with hash -859443904, now seen corresponding path program 1 times [2020-10-29 08:22:06,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:06,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357235142] [2020-10-29 08:22:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:11,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:11,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 08:22:11,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:22:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 08:22:11,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:11,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:22:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:22:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:11,813 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:22:11,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:11,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:11,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:11,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:22:11,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:11,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:22:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:12,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:12,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:22:12,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:12,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 08:22:12,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:12,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:12,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:22:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:12,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:22:12,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:22:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:12,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:12,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:22:12,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 08:22:12,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:12,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:12,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:22:12,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:12,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:22:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:12,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:12,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:22:12,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:12,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 08:22:12,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:12,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:12,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:12,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:12,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:22:12,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 290 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:22:12,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357235142] [2020-10-29 08:22:12,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:22:12,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:22:12,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950009555] [2020-10-29 08:22:12,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:22:12,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:12,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:22:12,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:22:12,934 INFO L87 Difference]: Start difference. First operand 13956 states and 18197 transitions. Second operand 10 states. [2020-10-29 08:22:13,226 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:22:14,153 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68