/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=DEEPEST --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/Problem04_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:51:37,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:51:37,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:51:37,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:51:37,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:51:37,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:51:37,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:51:37,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:51:37,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:51:37,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:51:37,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:51:37,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:51:37,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:51:37,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:51:37,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:51:37,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:51:37,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:51:37,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:51:37,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:51:38,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:51:38,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:51:38,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:51:38,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:51:38,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:51:38,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:51:38,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:51:38,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:51:38,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:51:38,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:51:38,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:51:38,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:51:38,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:51:38,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:51:38,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:51:38,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:51:38,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:51:38,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:51:38,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:51:38,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:51:38,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:51:38,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:51:38,053 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 [2020-10-27 15:51:38,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:51:38,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:51:38,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:51:38,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:51:38,121 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:51:38,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:51:38,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:51:38,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:51:38,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:51:38,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:51:38,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:51:38,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:51:38,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:51:38,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:51:38,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:51:38,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:51:38,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:51:38,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:51:38,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:51:38,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:51:38,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:51:38,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:51:38,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:51:38,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:51:38,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:51:38,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:51:38,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:51:38,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:51:38,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:51:38,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:51:38,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:51:38,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:51:38,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:51:38,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:51:38,600 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:51:38,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label02.c [2020-10-27 15:51:38,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0f75d69d/8430153bda1a42d0be6d62c3065e8bb3/FLAG58a511da8 [2020-10-27 15:51:39,561 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:51:39,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label02.c [2020-10-27 15:51:39,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0f75d69d/8430153bda1a42d0be6d62c3065e8bb3/FLAG58a511da8 [2020-10-27 15:51:40,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0f75d69d/8430153bda1a42d0be6d62c3065e8bb3 [2020-10-27 15:51:40,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:51:40,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:51:40,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:51:40,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:51:40,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:51:40,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:51:40" (1/1) ... [2020-10-27 15:51:40,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1699b0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:40, skipping insertion in model container [2020-10-27 15:51:40,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:51:40" (1/1) ... [2020-10-27 15:51:40,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:51:40,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:51:41,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:51:41,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:51:42,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:51:42,537 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:51:42,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42 WrapperNode [2020-10-27 15:51:42,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:51:42,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:51:42,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:51:42,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:51:42,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (1/1) ... [2020-10-27 15:51:42,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (1/1) ... [2020-10-27 15:51:42,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (1/1) ... [2020-10-27 15:51:42,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (1/1) ... [2020-10-27 15:51:42,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (1/1) ... [2020-10-27 15:51:42,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (1/1) ... [2020-10-27 15:51:42,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (1/1) ... [2020-10-27 15:51:42,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:51:42,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:51:42,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:51:42,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:51:42,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (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 [2020-10-27 15:51:42,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:51:42,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:51:42,945 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 15:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 15:51:42,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 15:51:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:51:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:51:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 15:51:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 15:51:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 15:51:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:51:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:51:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:51:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:51:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:51:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:51:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:51:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:51:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:51:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:51:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:51:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:51:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:51:48,175 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:51:48,176 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:51:48,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:51:48 BoogieIcfgContainer [2020-10-27 15:51:48,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:51:48,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:51:48,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:51:48,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:51:48,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:51:40" (1/3) ... [2020-10-27 15:51:48,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603b577b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:51:48, skipping insertion in model container [2020-10-27 15:51:48,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:51:42" (2/3) ... [2020-10-27 15:51:48,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603b577b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:51:48, skipping insertion in model container [2020-10-27 15:51:48,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:51:48" (3/3) ... [2020-10-27 15:51:48,197 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label02.c [2020-10-27 15:51:48,210 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:51:48,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:51:48,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:51:48,283 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:51:48,283 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:51:48,283 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:51:48,284 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:51:48,284 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:51:48,284 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:51:48,285 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:51:48,285 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:51:48,333 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 15:51:48,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-27 15:51:48,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:51:48,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:51:48,407 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:51:48,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:51:48,417 INFO L82 PathProgramCache]: Analyzing trace with hash -2067400440, now seen corresponding path program 1 times [2020-10-27 15:51:48,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:51:48,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262609058] [2020-10-27 15:51:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:51:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:49,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:54,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:54,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-27 15:51:54,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:51:54,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-27 15:51:54,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:51:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:51:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-27 15:51:54,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 15:51:55,769 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 15:51:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:51:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:51:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:51:55,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:51:55,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:51:55,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:51:55,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 15:51:55,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:51:55,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:51:55,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:51:55,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:51:55,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:51:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:51:56,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262609058] [2020-10-27 15:51:56,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:51:56,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:51:56,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924349316] [2020-10-27 15:51:56,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:51:56,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:51:56,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:51:56,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:51:56,960 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-27 15:51:57,125 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 15:52:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:52:06,643 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-27 15:52:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:52:06,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 815 [2020-10-27 15:52:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:52:06,681 INFO L225 Difference]: With dead ends: 2677 [2020-10-27 15:52:06,682 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 15:52:06,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:52:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 15:52:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-27 15:52:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-27 15:52:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-27 15:52:06,868 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 815 [2020-10-27 15:52:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:52:06,872 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-27 15:52:06,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:52:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-27 15:52:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-27 15:52:06,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:52:06,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:52:06,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:52:06,907 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:52:06,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:52:06,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1541047526, now seen corresponding path program 1 times [2020-10-27 15:52:06,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:52:06,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827945053] [2020-10-27 15:52:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:52:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:11,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:12,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:12,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-27 15:52:12,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:52:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-27 15:52:12,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:52:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 15:52:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-27 15:52:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:13,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:52:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:13,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:13,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:52:13,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:13,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:52:13,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:52:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:52:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-27 15:52:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:52:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:13,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:13,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:13,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 15:52:13,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:13,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:52:13,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:52:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 15:52:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:52:19,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827945053] [2020-10-27 15:52:19,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:52:19,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:52:19,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671268289] [2020-10-27 15:52:19,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:52:19,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:52:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:52:19,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:52:19,057 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 5 states. [2020-10-27 15:52:19,321 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 15:52:29,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:52:29,982 INFO L93 Difference]: Finished difference Result 4173 states and 7578 transitions. [2020-10-27 15:52:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:52:29,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 823 [2020-10-27 15:52:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:52:30,004 INFO L225 Difference]: With dead ends: 4173 [2020-10-27 15:52:30,004 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 15:52:30,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:52:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 15:52:30,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-27 15:52:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-27 15:52:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2135 transitions. [2020-10-27 15:52:30,081 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2135 transitions. Word has length 823 [2020-10-27 15:52:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:52:30,081 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2135 transitions. [2020-10-27 15:52:30,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:52:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2135 transitions. [2020-10-27 15:52:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-27 15:52:30,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:52:30,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:52:30,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:52:30,093 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:52:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:52:30,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1399628175, now seen corresponding path program 1 times [2020-10-27 15:52:30,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:52:30,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106423690] [2020-10-27 15:52:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:52:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:35,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:35,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 864 [2020-10-27 15:52:35,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:52:35,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 15:52:35,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:52:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 15:52:35,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-27 15:52:35,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:52:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:36,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:36,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:36,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:52:36,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:52:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:52:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:52:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:52:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:37,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:37,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 15:52:37,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 15:52:37,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:52:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:52:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:52:40,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106423690] [2020-10-27 15:52:40,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:52:40,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:52:40,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560281670] [2020-10-27 15:52:40,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:52:40,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:52:40,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:52:40,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:52:40,786 INFO L87 Difference]: Start difference. First operand 1690 states and 2135 transitions. Second operand 17 states. [2020-10-27 15:52:41,193 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 15:52:41,392 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 15:52:42,671 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 15:52:44,683 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 15:52:44,841 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 15:52:46,054 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 15:52:46,325 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 15:52:47,239 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 15:52:48,528 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-27 15:52:48,683 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 15:52:49,141 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 15:52:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:52:50,962 INFO L93 Difference]: Finished difference Result 3896 states and 4973 transitions. [2020-10-27 15:52:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:52:50,966 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 846 [2020-10-27 15:52:50,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:52:50,985 INFO L225 Difference]: With dead ends: 3896 [2020-10-27 15:52:50,989 INFO L226 Difference]: Without dead ends: 2013 [2020-10-27 15:52:50,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:52:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-27 15:52:51,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2009. [2020-10-27 15:52:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-27 15:52:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2460 transitions. [2020-10-27 15:52:51,074 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2460 transitions. Word has length 846 [2020-10-27 15:52:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:52:51,076 INFO L481 AbstractCegarLoop]: Abstraction has 2009 states and 2460 transitions. [2020-10-27 15:52:51,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:52:51,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2460 transitions. [2020-10-27 15:52:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-10-27 15:52:51,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:52:51,088 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:52:51,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:52:51,089 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:52:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:52:51,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1237570866, now seen corresponding path program 1 times [2020-10-27 15:52:51,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:52:51,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20559618] [2020-10-27 15:52:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:52:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:56,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:56,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 895 [2020-10-27 15:52:56,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:52:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-27 15:52:56,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:52:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 15:52:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-27 15:52:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:56,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:52:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:56,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:56,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:52:56,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:52:56,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:52:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:56,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:52:56,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:52:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:52:56,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:52:56,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:52:56,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 15:52:56,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:52:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 15:52:56,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:52:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:52:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:52:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 15:52:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:52:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:52:57,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20559618] [2020-10-27 15:52:57,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:52:57,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:52:57,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796244614] [2020-10-27 15:52:57,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:52:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:52:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:52:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:52:57,789 INFO L87 Difference]: Start difference. First operand 2009 states and 2460 transitions. Second operand 5 states. [2020-10-27 15:53:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:53:04,586 INFO L93 Difference]: Finished difference Result 5706 states and 7116 transitions. [2020-10-27 15:53:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:53:04,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 877 [2020-10-27 15:53:04,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:53:04,607 INFO L225 Difference]: With dead ends: 5706 [2020-10-27 15:53:04,607 INFO L226 Difference]: Without dead ends: 3703 [2020-10-27 15:53:04,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:53:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2020-10-27 15:53:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3699. [2020-10-27 15:53:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3699 states. [2020-10-27 15:53:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 4317 transitions. [2020-10-27 15:53:04,705 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 4317 transitions. Word has length 877 [2020-10-27 15:53:04,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:53:04,708 INFO L481 AbstractCegarLoop]: Abstraction has 3699 states and 4317 transitions. [2020-10-27 15:53:04,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:53:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 4317 transitions. [2020-10-27 15:53:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2020-10-27 15:53:04,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:53:04,723 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:53:04,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:53:04,724 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:53:04,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:53:04,725 INFO L82 PathProgramCache]: Analyzing trace with hash 675881554, now seen corresponding path program 1 times [2020-10-27 15:53:04,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:53:04,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643920526] [2020-10-27 15:53:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:53:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:53:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:05,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:09,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:53:09,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-27 15:53:09,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:53:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-27 15:53:09,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:53:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:53:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 15:53:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-27 15:53:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:53:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:53:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:53:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:10,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:53:10,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:53:10,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:53:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:53:10,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:53:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:53:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:53:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:53:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:53:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:53:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:53:10,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:10,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:53:10,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 15:53:10,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:53:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 15:53:10,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:53:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:53:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:53:10,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 15:53:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:53:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:53:11,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643920526] [2020-10-27 15:53:11,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:53:11,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:53:11,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101268099] [2020-10-27 15:53:11,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:53:11,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:53:11,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:53:11,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:53:11,204 INFO L87 Difference]: Start difference. First operand 3699 states and 4317 transitions. Second operand 5 states. [2020-10-27 15:53:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:53:17,461 INFO L93 Difference]: Finished difference Result 10782 states and 12837 transitions. [2020-10-27 15:53:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:53:17,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 893 [2020-10-27 15:53:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:53:17,494 INFO L225 Difference]: With dead ends: 10782 [2020-10-27 15:53:17,494 INFO L226 Difference]: Without dead ends: 7089 [2020-10-27 15:53:17,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:53:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2020-10-27 15:53:17,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 7081. [2020-10-27 15:53:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7081 states. [2020-10-27 15:53:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 8296 transitions. [2020-10-27 15:53:17,685 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 8296 transitions. Word has length 893 [2020-10-27 15:53:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:53:17,685 INFO L481 AbstractCegarLoop]: Abstraction has 7081 states and 8296 transitions. [2020-10-27 15:53:17,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:53:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 8296 transitions. [2020-10-27 15:53:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2020-10-27 15:53:17,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:53:17,713 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:53:17,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:53:17,713 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:53:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:53:17,714 INFO L82 PathProgramCache]: Analyzing trace with hash -986916501, now seen corresponding path program 1 times [2020-10-27 15:53:17,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:53:17,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680189247] [2020-10-27 15:53:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:53:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:53:17,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:22,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:53:22,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 958 [2020-10-27 15:53:22,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:53:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 15:53:22,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:53:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 15:53:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 15:53:22,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-27 15:53:22,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:53:25,786 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-10-27 15:53:25,945 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-27 15:53:26,124 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-27 15:53:26,350 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2020-10-27 15:53:26,486 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-10-27 15:53:26,635 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-27 15:53:26,795 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-27 15:53:27,001 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 39 [2020-10-27 15:53:27,186 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 34 [2020-10-27 15:53:27,379 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-27 15:53:27,568 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-27 15:53:28,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:53:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:53:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:28,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:53:28,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:53:28,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:53:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:53:28,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:53:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:53:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:53:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:53:28,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:53:28,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:53:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:53:28,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:53:28,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:53:28,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 15:53:28,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:53:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 15:53:28,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:53:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:53:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:53:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 15:53:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:53:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 121 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:53:35,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680189247] [2020-10-27 15:53:35,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:53:35,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 15:53:35,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680440265] [2020-10-27 15:53:35,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 15:53:35,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:53:35,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 15:53:35,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-27 15:53:35,117 INFO L87 Difference]: Start difference. First operand 7081 states and 8296 transitions. Second operand 20 states. [2020-10-27 15:53:37,793 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-27 15:53:38,186 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 129 [2020-10-27 15:53:42,316 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2020-10-27 15:53:44,741 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 127 [2020-10-27 15:53:45,614 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2020-10-27 15:53:45,997 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2020-10-27 15:53:49,439 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 121 [2020-10-27 15:53:51,208 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2020-10-27 15:53:53,324 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2020-10-27 15:53:53,775 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2020-10-27 15:53:54,566 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-27 15:54:00,853 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-10-27 15:54:01,194 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 15:54:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:54:02,123 INFO L93 Difference]: Finished difference Result 14864 states and 17588 transitions. [2020-10-27 15:54:02,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 15:54:02,125 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 940 [2020-10-27 15:54:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:54:02,158 INFO L225 Difference]: With dead ends: 14864 [2020-10-27 15:54:02,158 INFO L226 Difference]: Without dead ends: 7789 [2020-10-27 15:54:02,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 15:54:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2020-10-27 15:54:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7785. [2020-10-27 15:54:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7785 states. [2020-10-27 15:54:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7785 states to 7785 states and 9007 transitions. [2020-10-27 15:54:02,416 INFO L78 Accepts]: Start accepts. Automaton has 7785 states and 9007 transitions. Word has length 940 [2020-10-27 15:54:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:54:02,419 INFO L481 AbstractCegarLoop]: Abstraction has 7785 states and 9007 transitions. [2020-10-27 15:54:02,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 15:54:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 7785 states and 9007 transitions. [2020-10-27 15:54:02,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-27 15:54:02,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:54:02,453 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:54:02,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:54:02,453 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:54:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:54:02,454 INFO L82 PathProgramCache]: Analyzing trace with hash -382449457, now seen corresponding path program 1 times [2020-10-27 15:54:02,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:54:02,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229162060] [2020-10-27 15:54:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:54:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:02,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:07,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:07,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1024 [2020-10-27 15:54:07,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:54:07,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-10-27 15:54:07,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:54:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-27 15:54:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 657 [2020-10-27 15:54:07,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:54:09,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:54:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:09,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:09,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:54:09,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:54:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:54:09,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:54:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:54:09,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:54:09,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:54:09,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:54:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:09,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:09,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 15:54:09,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:54:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 15:54:09,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:54:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:54:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 15:54:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:54:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 187 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:54:15,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229162060] [2020-10-27 15:54:15,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:54:15,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:54:15,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128976262] [2020-10-27 15:54:15,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:54:15,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:54:15,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:54:15,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:54:15,833 INFO L87 Difference]: Start difference. First operand 7785 states and 9007 transitions. Second operand 17 states. [2020-10-27 15:54:17,234 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 15:54:17,445 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 15:54:20,279 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 15:54:21,674 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-27 15:54:21,867 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 15:54:25,482 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 15:54:26,053 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 15:54:26,223 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 15:54:27,307 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2020-10-27 15:54:28,937 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 119 [2020-10-27 15:54:30,271 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2020-10-27 15:54:30,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:54:30,446 INFO L93 Difference]: Finished difference Result 16218 states and 18928 transitions. [2020-10-27 15:54:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:54:30,450 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1006 [2020-10-27 15:54:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:54:30,484 INFO L225 Difference]: With dead ends: 16218 [2020-10-27 15:54:30,485 INFO L226 Difference]: Without dead ends: 8439 [2020-10-27 15:54:30,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:54:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2020-10-27 15:54:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 8435. [2020-10-27 15:54:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8435 states. [2020-10-27 15:54:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8435 states to 8435 states and 9663 transitions. [2020-10-27 15:54:30,688 INFO L78 Accepts]: Start accepts. Automaton has 8435 states and 9663 transitions. Word has length 1006 [2020-10-27 15:54:30,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:54:30,690 INFO L481 AbstractCegarLoop]: Abstraction has 8435 states and 9663 transitions. [2020-10-27 15:54:30,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:54:30,690 INFO L276 IsEmpty]: Start isEmpty. Operand 8435 states and 9663 transitions. [2020-10-27 15:54:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2020-10-27 15:54:30,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:54:30,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:54:30,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:54:30,722 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:54:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:54:30,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1176231151, now seen corresponding path program 1 times [2020-10-27 15:54:30,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:54:30,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71801324] [2020-10-27 15:54:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:54:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:30,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:34,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:35,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:35,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-27 15:54:35,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:54:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 15:54:35,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:54:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-10-27 15:54:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 547 [2020-10-27 15:54:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:54:38,340 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-27 15:54:38,603 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-10-27 15:54:38,739 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2020-10-27 15:54:38,911 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2020-10-27 15:54:39,197 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 36 [2020-10-27 15:54:39,368 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 37 [2020-10-27 15:54:39,533 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-27 15:54:39,737 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41 [2020-10-27 15:54:40,015 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 46 [2020-10-27 15:54:40,407 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 43 [2020-10-27 15:54:40,715 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 39 [2020-10-27 15:54:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:54:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:40,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:40,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:54:40,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:54:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:54:40,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:54:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:54:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:54:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:54:40,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:54:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:40,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:40,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:40,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:54:40,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:54:40,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:54:40,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:54:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:54:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:54:40,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:54:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 15:54:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:40,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:40,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 15:54:40,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:54:40,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 15:54:40,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:54:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:54:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:54:40,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:54:40,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 15:54:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:54:40,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:54:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:54:41,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 15:54:41,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:54:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 15:54:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:54:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:54:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:54:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 15:54:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:54:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 203 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 15:54:46,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71801324] [2020-10-27 15:54:46,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:54:46,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 15:54:46,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13124248] [2020-10-27 15:54:46,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 15:54:46,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:54:46,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 15:54:46,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-27 15:54:46,825 INFO L87 Difference]: Start difference. First operand 8435 states and 9663 transitions. Second operand 17 states. [2020-10-27 15:54:49,002 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 15:54:49,239 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 15:54:54,311 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 15:54:54,510 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 15:54:56,455 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2020-10-27 15:54:57,010 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 15:55:00,125 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 15:55:00,360 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 15:55:01,167 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 127 [2020-10-27 15:55:02,760 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 124 [2020-10-27 15:55:03,239 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 121 [2020-10-27 15:55:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:55:04,123 INFO L93 Difference]: Finished difference Result 17408 states and 20096 transitions. [2020-10-27 15:55:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 15:55:04,124 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1024 [2020-10-27 15:55:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:55:04,147 INFO L225 Difference]: With dead ends: 17408 [2020-10-27 15:55:04,148 INFO L226 Difference]: Without dead ends: 8979 [2020-10-27 15:55:04,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-27 15:55:04,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2020-10-27 15:55:04,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 8975. [2020-10-27 15:55:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8975 states. [2020-10-27 15:55:04,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8975 states to 8975 states and 10207 transitions. [2020-10-27 15:55:04,354 INFO L78 Accepts]: Start accepts. Automaton has 8975 states and 10207 transitions. Word has length 1024 [2020-10-27 15:55:04,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:55:04,355 INFO L481 AbstractCegarLoop]: Abstraction has 8975 states and 10207 transitions. [2020-10-27 15:55:04,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 15:55:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8975 states and 10207 transitions. [2020-10-27 15:55:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2020-10-27 15:55:04,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:55:04,387 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:55:04,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:55:04,387 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:55:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:55:04,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2002698257, now seen corresponding path program 1 times [2020-10-27 15:55:04,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:55:04,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197032480] [2020-10-27 15:55:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:55:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:09,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:09,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1040 [2020-10-27 15:55:09,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:55:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 15:55:09,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 15:55:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-27 15:55:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 547 [2020-10-27 15:55:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:11,320 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-27 15:55:11,435 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-27 15:55:11,550 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-27 15:55:11,791 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-27 15:55:11,940 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-10-27 15:55:12,239 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2020-10-27 15:55:12,406 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 37 [2020-10-27 15:55:12,638 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 41 [2020-10-27 15:55:12,872 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 39 [2020-10-27 15:55:13,099 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 39 [2020-10-27 15:55:13,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:55:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:13,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:13,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:13,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:55:13,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:13,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:55:13,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:55:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:13,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:55:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:55:13,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:55:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:55:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:55:13,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:55:13,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 15:55:13,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:55:13,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 15:55:13,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:55:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:55:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:55:13,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-27 15:55:13,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0