/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:59:01,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:59:01,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:59:01,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:59:01,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:59:01,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:59:01,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:59:01,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:59:01,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:59:01,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:59:01,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:59:01,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:59:01,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:59:01,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:59:01,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:59:01,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:59:01,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:59:01,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:59:01,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:59:01,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:59:01,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:59:01,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:59:01,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:59:01,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:59:01,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:59:01,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:59:01,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:59:01,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:59:01,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:59:01,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:59:01,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:59:01,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:59:01,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:59:01,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:59:01,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:59:01,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:59:01,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:59:01,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:59:01,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:59:01,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:59:01,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:59:01,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 19:59:01,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:59:01,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:59:01,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:59:01,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:59:01,946 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:59:01,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:59:01,946 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:59:01,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:59:01,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:59:01,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:59:01,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:59:01,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:59:01,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:59:01,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:59:01,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:59:01,949 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:59:01,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:59:01,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:59:01,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:59:01,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:59:01,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:59:01,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:59:01,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:59:01,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:59:01,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:59:01,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:59:01,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:59:01,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:59:01,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:59:01,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:59:02,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:59:02,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:59:02,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:59:02,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:59:02,405 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:59:02,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-26 19:59:02,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0a14bf7/2531c9ae761a48b889a2269a9ba580c4/FLAG221861c84 [2020-10-26 19:59:03,163 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:59:03,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_1-1.i [2020-10-26 19:59:03,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0a14bf7/2531c9ae761a48b889a2269a9ba580c4/FLAG221861c84 [2020-10-26 19:59:03,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0a14bf7/2531c9ae761a48b889a2269a9ba580c4 [2020-10-26 19:59:03,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:59:03,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:59:03,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:59:03,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:59:03,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:59:03,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385fa4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03, skipping insertion in model container [2020-10-26 19:59:03,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:59:03,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:59:03,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:59:03,807 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:59:03,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:59:03,924 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:59:03,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03 WrapperNode [2020-10-26 19:59:03,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:59:03,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:59:03,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:59:03,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:59:03,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (1/1) ... [2020-10-26 19:59:03,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:59:03,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:59:03,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:59:03,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:59:03,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:59:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:59:04,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:59:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:59:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:59:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-26 19:59:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:59:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:59:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:59:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 19:59:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 19:59:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:59:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:59:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-26 19:59:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:59:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-26 19:59:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:59:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:59:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:59:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:59:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:59:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:59:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:59:04,765 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:59:04,765 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:59:04,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:59:04 BoogieIcfgContainer [2020-10-26 19:59:04,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:59:04,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:59:04,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:59:04,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:59:04,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:59:03" (1/3) ... [2020-10-26 19:59:04,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b685aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:59:04, skipping insertion in model container [2020-10-26 19:59:04,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:59:03" (2/3) ... [2020-10-26 19:59:04,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b685aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:59:04, skipping insertion in model container [2020-10-26 19:59:04,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:59:04" (3/3) ... [2020-10-26 19:59:04,782 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2020-10-26 19:59:04,795 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:59:04,800 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:59:04,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:59:04,862 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:59:04,862 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:59:04,863 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:59:04,863 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:59:04,863 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:59:04,863 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:59:04,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:59:04,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:59:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-26 19:59:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 19:59:04,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:04,900 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] [2020-10-26 19:59:04,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:04,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1266705012, now seen corresponding path program 1 times [2020-10-26 19:59:04,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:04,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047500018] [2020-10-26 19:59:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 19:59:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:59:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-26 19:59:05,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-26 19:59:05,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 19:59:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 19:59:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:59:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:05,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-26 19:59:05,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:59:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 19:59:05,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-26 19:59:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 19:59:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:59:05,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047500018] [2020-10-26 19:59:05,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:59:05,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:59:05,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013257772] [2020-10-26 19:59:05,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:59:05,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:05,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:59:05,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:59:05,816 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-10-26 19:59:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:06,312 INFO L93 Difference]: Finished difference Result 124 states and 203 transitions. [2020-10-26 19:59:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:59:06,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-26 19:59:06,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:06,324 INFO L225 Difference]: With dead ends: 124 [2020-10-26 19:59:06,324 INFO L226 Difference]: Without dead ends: 73 [2020-10-26 19:59:06,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:59:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-26 19:59:06,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-26 19:59:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-26 19:59:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 101 transitions. [2020-10-26 19:59:06,378 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 101 transitions. Word has length 24 [2020-10-26 19:59:06,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:06,378 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 101 transitions. [2020-10-26 19:59:06,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:59:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 101 transitions. [2020-10-26 19:59:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 19:59:06,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:06,381 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] [2020-10-26 19:59:06,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:59:06,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:06,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:06,382 INFO L82 PathProgramCache]: Analyzing trace with hash -992029496, now seen corresponding path program 1 times [2020-10-26 19:59:06,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:06,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90180841] [2020-10-26 19:59:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:06,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 19:59:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:59:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1079 [2020-10-26 19:59:07,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:59:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 19:59:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-26 19:59:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:07,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:07,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:07,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:07,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:07,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:07,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:07,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:08,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:08,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 19:59:08,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:59:08,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-26 19:59:08,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:08,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:59:08,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:59:08,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:08,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:59:08,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90180841] [2020-10-26 19:59:08,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:59:08,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:59:08,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514725126] [2020-10-26 19:59:08,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:59:08,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:08,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:59:08,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:59:08,182 INFO L87 Difference]: Start difference. First operand 71 states and 101 transitions. Second operand 5 states. [2020-10-26 19:59:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:08,657 INFO L93 Difference]: Finished difference Result 168 states and 248 transitions. [2020-10-26 19:59:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:59:08,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-26 19:59:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:08,662 INFO L225 Difference]: With dead ends: 168 [2020-10-26 19:59:08,662 INFO L226 Difference]: Without dead ends: 119 [2020-10-26 19:59:08,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:59:08,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-26 19:59:08,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2020-10-26 19:59:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 19:59:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 111 transitions. [2020-10-26 19:59:08,679 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 111 transitions. Word has length 30 [2020-10-26 19:59:08,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:08,679 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 111 transitions. [2020-10-26 19:59:08,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:59:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 111 transitions. [2020-10-26 19:59:08,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 19:59:08,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:08,681 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] [2020-10-26 19:59:08,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:59:08,682 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:08,682 INFO L82 PathProgramCache]: Analyzing trace with hash 343543299, now seen corresponding path program 1 times [2020-10-26 19:59:08,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:08,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484879597] [2020-10-26 19:59:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:08,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:08,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:09,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:10,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-26 19:59:10,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-26 19:59:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-10-26 19:59:10,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:59:10,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:59:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:10,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:10,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:10,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:10,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:10,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:10,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:59:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 19:59:11,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-26 19:59:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-26 19:59:11,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:59:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:59:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-26 19:59:11,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:59:11,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484879597] [2020-10-26 19:59:11,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:59:11,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 19:59:11,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073873724] [2020-10-26 19:59:11,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 19:59:11,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:11,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 19:59:11,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:59:11,533 INFO L87 Difference]: Start difference. First operand 78 states and 111 transitions. Second operand 7 states. [2020-10-26 19:59:12,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:12,378 INFO L93 Difference]: Finished difference Result 216 states and 322 transitions. [2020-10-26 19:59:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 19:59:12,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-26 19:59:12,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:12,381 INFO L225 Difference]: With dead ends: 216 [2020-10-26 19:59:12,382 INFO L226 Difference]: Without dead ends: 167 [2020-10-26 19:59:12,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:59:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-26 19:59:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 78. [2020-10-26 19:59:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 19:59:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 111 transitions. [2020-10-26 19:59:12,395 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 111 transitions. Word has length 31 [2020-10-26 19:59:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:12,395 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 111 transitions. [2020-10-26 19:59:12,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 19:59:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 111 transitions. [2020-10-26 19:59:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:59:12,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:12,397 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] [2020-10-26 19:59:12,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:59:12,397 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:12,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:12,398 INFO L82 PathProgramCache]: Analyzing trace with hash -724373869, now seen corresponding path program 1 times [2020-10-26 19:59:12,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:12,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609555121] [2020-10-26 19:59:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:13,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:13,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:59:15,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:59:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2873 [2020-10-26 19:59:15,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:59:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:59:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:15,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:15,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:15,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:59:15,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:15,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:15,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:16,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:16,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 19:59:16,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:59:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-26 19:59:16,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:59:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:59:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 19:59:16,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:59:16,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609555121] [2020-10-26 19:59:16,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:59:16,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 19:59:16,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939042741] [2020-10-26 19:59:16,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:59:16,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:16,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:59:16,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:59:16,963 INFO L87 Difference]: Start difference. First operand 78 states and 111 transitions. Second operand 6 states. [2020-10-26 19:59:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:17,522 INFO L93 Difference]: Finished difference Result 138 states and 198 transitions. [2020-10-26 19:59:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:59:17,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-26 19:59:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:17,523 INFO L225 Difference]: With dead ends: 138 [2020-10-26 19:59:17,523 INFO L226 Difference]: Without dead ends: 78 [2020-10-26 19:59:17,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:59:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-26 19:59:17,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-26 19:59:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 19:59:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2020-10-26 19:59:17,547 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 32 [2020-10-26 19:59:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:17,547 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2020-10-26 19:59:17,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:59:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2020-10-26 19:59:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:59:17,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:17,549 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] [2020-10-26 19:59:17,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:59:17,549 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:17,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:17,553 INFO L82 PathProgramCache]: Analyzing trace with hash -505519151, now seen corresponding path program 1 times [2020-10-26 19:59:17,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:17,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687840343] [2020-10-26 19:59:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:18,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:18,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:19,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:19,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 19:59:19,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-26 19:59:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2253 [2020-10-26 19:59:19,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:59:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:59:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:19,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:19,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:19,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:19,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:19,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:19,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 19:59:21,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-26 19:59:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-26 19:59:21,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:59:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:59:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 19:59:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:59:21,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687840343] [2020-10-26 19:59:21,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:59:21,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 19:59:21,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039389015] [2020-10-26 19:59:21,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 19:59:21,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 19:59:21,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:59:21,147 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 6 states. [2020-10-26 19:59:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:21,662 INFO L93 Difference]: Finished difference Result 126 states and 180 transitions. [2020-10-26 19:59:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:59:21,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-26 19:59:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:21,664 INFO L225 Difference]: With dead ends: 126 [2020-10-26 19:59:21,664 INFO L226 Difference]: Without dead ends: 65 [2020-10-26 19:59:21,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:59:21,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-26 19:59:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-26 19:59:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-26 19:59:21,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2020-10-26 19:59:21,672 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 32 [2020-10-26 19:59:21,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:21,673 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2020-10-26 19:59:21,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 19:59:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2020-10-26 19:59:21,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 19:59:21,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:21,674 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] [2020-10-26 19:59:21,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:59:21,675 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:21,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1437637273, now seen corresponding path program 1 times [2020-10-26 19:59:21,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:21,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638486035] [2020-10-26 19:59:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:22,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:24,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 19:59:24,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:59:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2573 [2020-10-26 19:59:24,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 19:59:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 19:59:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 19:59:24,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:24,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:24,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:24,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:24,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:24,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:24,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:24,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:24,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:25,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:25,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-26 19:59:25,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:59:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-26 19:59:25,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 19:59:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:59:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 19:59:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:59:25,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638486035] [2020-10-26 19:59:25,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:25,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 19:59:25,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792220962] [2020-10-26 19:59:25,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 19:59:25,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:25,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 19:59:25,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-26 19:59:25,907 INFO L87 Difference]: Start difference. First operand 65 states and 91 transitions. Second operand 7 states. [2020-10-26 19:59:27,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:27,044 INFO L93 Difference]: Finished difference Result 216 states and 351 transitions. [2020-10-26 19:59:27,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 19:59:27,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-26 19:59:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:27,046 INFO L225 Difference]: With dead ends: 216 [2020-10-26 19:59:27,046 INFO L226 Difference]: Without dead ends: 182 [2020-10-26 19:59:27,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:59:27,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-26 19:59:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 139. [2020-10-26 19:59:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-26 19:59:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 213 transitions. [2020-10-26 19:59:27,061 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 213 transitions. Word has length 37 [2020-10-26 19:59:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:27,062 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 213 transitions. [2020-10-26 19:59:27,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 19:59:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 213 transitions. [2020-10-26 19:59:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-26 19:59:27,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:27,064 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] [2020-10-26 19:59:27,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:59:27,065 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:27,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:27,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1170775092, now seen corresponding path program 1 times [2020-10-26 19:59:27,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:27,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240265837] [2020-10-26 19:59:27,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:28,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:31,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:31,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-26 19:59:31,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-26 19:59:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4902 [2020-10-26 19:59:31,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:59:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:59:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:59:32,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:32,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:32,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:32,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:32,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:32,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:32,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:34,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:34,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 19:59:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-26 19:59:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2524 [2020-10-26 19:59:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 19:59:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:59:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 19:59:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:59:34,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240265837] [2020-10-26 19:59:34,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:34,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 19:59:34,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733525016] [2020-10-26 19:59:34,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 19:59:34,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:34,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 19:59:34,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-26 19:59:34,877 INFO L87 Difference]: Start difference. First operand 139 states and 213 transitions. Second operand 9 states. [2020-10-26 19:59:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:36,572 INFO L93 Difference]: Finished difference Result 252 states and 392 transitions. [2020-10-26 19:59:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 19:59:36,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-26 19:59:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:36,575 INFO L225 Difference]: With dead ends: 252 [2020-10-26 19:59:36,575 INFO L226 Difference]: Without dead ends: 213 [2020-10-26 19:59:36,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:59:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-26 19:59:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 187. [2020-10-26 19:59:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-26 19:59:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 288 transitions. [2020-10-26 19:59:36,597 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 288 transitions. Word has length 38 [2020-10-26 19:59:36,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:36,597 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 288 transitions. [2020-10-26 19:59:36,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 19:59:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 288 transitions. [2020-10-26 19:59:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-26 19:59:36,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:36,600 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] [2020-10-26 19:59:36,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:59:36,600 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1513099496, now seen corresponding path program 1 times [2020-10-26 19:59:36,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:36,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282902231] [2020-10-26 19:59:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:41,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 19:59:41,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:59:41,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 19:59:41,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:41,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 19:59:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:59:41,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:41,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:59:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:41,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:41,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:41,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:41,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:41,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:41,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:41,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:41,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:45,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:45,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 19:59:45,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-26 19:59:45,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3488 [2020-10-26 19:59:45,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:45,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 19:59:45,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:59:45,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 19:59:45,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:59:45,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282902231] [2020-10-26 19:59:45,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:45,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 19:59:45,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001714591] [2020-10-26 19:59:45,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 19:59:45,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:45,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 19:59:45,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-26 19:59:45,283 INFO L87 Difference]: Start difference. First operand 187 states and 288 transitions. Second operand 8 states. [2020-10-26 19:59:46,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:46,351 INFO L93 Difference]: Finished difference Result 307 states and 495 transitions. [2020-10-26 19:59:46,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 19:59:46,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-26 19:59:46,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:46,356 INFO L225 Difference]: With dead ends: 307 [2020-10-26 19:59:46,356 INFO L226 Difference]: Without dead ends: 242 [2020-10-26 19:59:46,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:59:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-26 19:59:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 224. [2020-10-26 19:59:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-26 19:59:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 341 transitions. [2020-10-26 19:59:46,374 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 341 transitions. Word has length 39 [2020-10-26 19:59:46,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:46,375 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 341 transitions. [2020-10-26 19:59:46,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 19:59:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 341 transitions. [2020-10-26 19:59:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 19:59:46,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:46,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:46,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:59:46,378 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:46,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:46,379 INFO L82 PathProgramCache]: Analyzing trace with hash -442611909, now seen corresponding path program 1 times [2020-10-26 19:59:46,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:46,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755729951] [2020-10-26 19:59:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:46,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-26 19:59:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:51,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-26 19:59:51,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 125 [2020-10-26 19:59:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 19:59:51,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:51,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 19:59:51,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 19:59:51,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 19:59:51,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:51,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:51,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 19:59:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:51,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-26 19:59:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-26 19:59:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:56,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:56,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-26 19:59:56,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 114 [2020-10-26 19:59:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 19:59:56,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 19:59:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 19:59:56,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 19:59:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:59:56,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755729951] [2020-10-26 19:59:56,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:56,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:59:56,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644859995] [2020-10-26 19:59:56,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:59:56,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:56,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:59:56,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:59:56,785 INFO L87 Difference]: Start difference. First operand 224 states and 341 transitions. Second operand 10 states. [2020-10-26 19:59:58,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:58,815 INFO L93 Difference]: Finished difference Result 655 states and 1082 transitions. [2020-10-26 19:59:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:59:58,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-26 19:59:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:58,821 INFO L225 Difference]: With dead ends: 655 [2020-10-26 19:59:58,821 INFO L226 Difference]: Without dead ends: 505 [2020-10-26 19:59:58,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:59:58,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-10-26 19:59:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 465. [2020-10-26 19:59:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-10-26 19:59:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 673 transitions. [2020-10-26 19:59:58,880 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 673 transitions. Word has length 50 [2020-10-26 19:59:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:58,880 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 673 transitions. [2020-10-26 19:59:58,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:59:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 673 transitions. [2020-10-26 19:59:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-26 19:59:58,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:58,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 19:59:58,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:59:58,897 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash 90177647, now seen corresponding path program 1 times [2020-10-26 19:59:58,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:58,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141576991] [2020-10-26 19:59:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-26 20:00:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:02,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:02,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 20:00:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 74 [2020-10-26 20:00:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 20:00:03,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:00:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-26 20:00:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:00:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:03,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:03,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:03,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:00:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:03,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:08,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-26 20:00:08,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 103 [2020-10-26 20:00:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 20:00:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:00:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:00:08,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:00:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:00:09,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141576991] [2020-10-26 20:00:09,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:00:09,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:00:09,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111044490] [2020-10-26 20:00:09,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:00:09,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:09,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:00:09,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:00:09,449 INFO L87 Difference]: Start difference. First operand 465 states and 673 transitions. Second operand 9 states. [2020-10-26 20:00:09,714 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-26 20:00:10,205 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-26 20:00:10,351 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-26 20:00:10,604 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-26 20:00:11,277 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-26 20:00:11,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:11,546 INFO L93 Difference]: Finished difference Result 630 states and 907 transitions. [2020-10-26 20:00:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:00:11,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-26 20:00:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:11,553 INFO L225 Difference]: With dead ends: 630 [2020-10-26 20:00:11,553 INFO L226 Difference]: Without dead ends: 488 [2020-10-26 20:00:11,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-26 20:00:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-26 20:00:11,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 445. [2020-10-26 20:00:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-26 20:00:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 628 transitions. [2020-10-26 20:00:11,586 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 628 transitions. Word has length 63 [2020-10-26 20:00:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:11,586 INFO L481 AbstractCegarLoop]: Abstraction has 445 states and 628 transitions. [2020-10-26 20:00:11,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:00:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 628 transitions. [2020-10-26 20:00:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-26 20:00:11,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:11,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:11,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:00:11,590 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:11,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1845046864, now seen corresponding path program 1 times [2020-10-26 20:00:11,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:11,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963253224] [2020-10-26 20:00:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:11,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:16,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 20:00:16,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 79 [2020-10-26 20:00:16,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 20:00:16,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:00:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:00:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:16,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:16,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:16,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:16,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:16,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:00:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:19,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:21,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:21,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-26 20:00:21,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-26 20:00:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 20:00:21,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:00:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:00:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-26 20:00:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-26 20:00:21,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963253224] [2020-10-26 20:00:21,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:00:21,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:00:21,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011286816] [2020-10-26 20:00:21,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:00:21,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:21,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:00:21,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:00:21,768 INFO L87 Difference]: Start difference. First operand 445 states and 628 transitions. Second operand 6 states. [2020-10-26 20:00:22,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:22,277 INFO L93 Difference]: Finished difference Result 456 states and 638 transitions. [2020-10-26 20:00:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:00:22,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-26 20:00:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:22,280 INFO L225 Difference]: With dead ends: 456 [2020-10-26 20:00:22,280 INFO L226 Difference]: Without dead ends: 142 [2020-10-26 20:00:22,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:00:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-26 20:00:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-10-26 20:00:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-26 20:00:22,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 176 transitions. [2020-10-26 20:00:22,291 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 176 transitions. Word has length 64 [2020-10-26 20:00:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:22,291 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 176 transitions. [2020-10-26 20:00:22,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:00:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 176 transitions. [2020-10-26 20:00:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-26 20:00:22,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:22,292 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:22,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:00:22,293 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:22,293 INFO L82 PathProgramCache]: Analyzing trace with hash -254488509, now seen corresponding path program 1 times [2020-10-26 20:00:22,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:22,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627643062] [2020-10-26 20:00:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:27,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 20:00:27,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-26 20:00:27,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 20:00:27,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:00:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:00:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 20:00:27,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:27,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:27,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:27,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:27,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:27,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:27,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:27,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:27,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:00:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:29,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:29,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:29,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:29,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:29,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:29,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:30,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:32,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:32,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-26 20:00:32,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-26 20:00:32,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 20:00:32,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:00:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:00:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:00:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 20:00:32,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627643062] [2020-10-26 20:00:32,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:00:32,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 20:00:32,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850749695] [2020-10-26 20:00:32,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 20:00:32,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:32,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 20:00:32,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:00:32,783 INFO L87 Difference]: Start difference. First operand 142 states and 176 transitions. Second operand 11 states. [2020-10-26 20:00:34,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:34,221 INFO L93 Difference]: Finished difference Result 410 states and 512 transitions. [2020-10-26 20:00:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:00:34,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-26 20:00:34,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:34,224 INFO L225 Difference]: With dead ends: 410 [2020-10-26 20:00:34,225 INFO L226 Difference]: Without dead ends: 285 [2020-10-26 20:00:34,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-26 20:00:34,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-26 20:00:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 234. [2020-10-26 20:00:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-26 20:00:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 291 transitions. [2020-10-26 20:00:34,241 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 291 transitions. Word has length 76 [2020-10-26 20:00:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:34,241 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 291 transitions. [2020-10-26 20:00:34,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 20:00:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 291 transitions. [2020-10-26 20:00:34,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-26 20:00:34,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:34,242 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:34,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:00:34,243 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:34,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:34,243 INFO L82 PathProgramCache]: Analyzing trace with hash 70040589, now seen corresponding path program 1 times [2020-10-26 20:00:34,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:34,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468819948] [2020-10-26 20:00:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:36,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-26 20:00:39,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 58 [2020-10-26 20:00:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 20:00:39,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:00:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:00:39,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 20:00:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:39,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:39,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:00:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:42,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:42,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:44,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:44,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-26 20:00:44,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 76 [2020-10-26 20:00:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 20:00:44,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 20:00:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:00:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 20:00:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 20:00:44,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468819948] [2020-10-26 20:00:44,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:00:44,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 20:00:44,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386235130] [2020-10-26 20:00:44,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:00:44,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:44,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:00:44,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:00:44,911 INFO L87 Difference]: Start difference. First operand 234 states and 291 transitions. Second operand 12 states. [2020-10-26 20:00:45,376 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-10-26 20:00:45,887 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-26 20:00:47,090 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-26 20:00:47,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:47,587 INFO L93 Difference]: Finished difference Result 599 states and 749 transitions. [2020-10-26 20:00:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 20:00:47,587 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-10-26 20:00:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:47,591 INFO L225 Difference]: With dead ends: 599 [2020-10-26 20:00:47,591 INFO L226 Difference]: Without dead ends: 462 [2020-10-26 20:00:47,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2020-10-26 20:00:47,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-26 20:00:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 355. [2020-10-26 20:00:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-26 20:00:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 440 transitions. [2020-10-26 20:00:47,613 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 440 transitions. Word has length 77 [2020-10-26 20:00:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:47,614 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 440 transitions. [2020-10-26 20:00:47,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:00:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 440 transitions. [2020-10-26 20:00:47,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-26 20:00:47,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:47,615 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:47,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:00:47,615 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:47,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1869449070, now seen corresponding path program 1 times [2020-10-26 20:00:47,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:47,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201782651] [2020-10-26 20:00:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:47,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:47,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:48,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:51,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:52,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 20:00:52,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 95 [2020-10-26 20:00:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 20:00:52,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:00:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:00:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 20:00:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:52,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:52,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:52,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:52,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:52,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:52,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:00:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:57,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:57,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-26 20:00:57,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 103 [2020-10-26 20:00:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 20:00:57,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 20:00:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:00:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 20:00:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 44 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-26 20:00:58,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201782651] [2020-10-26 20:00:58,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:00:58,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 20:00:58,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163588373] [2020-10-26 20:00:58,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 20:00:58,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 20:00:58,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:00:58,160 INFO L87 Difference]: Start difference. First operand 355 states and 440 transitions. Second operand 14 states. [2020-10-26 20:00:59,767 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-26 20:00:59,919 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-26 20:01:01,121 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-26 20:01:01,300 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-26 20:01:01,494 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-26 20:01:01,787 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-26 20:01:02,000 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-26 20:01:02,348 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-10-26 20:01:02,568 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-10-26 20:01:02,966 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-26 20:01:03,181 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-26 20:01:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:04,014 INFO L93 Difference]: Finished difference Result 792 states and 983 transitions. [2020-10-26 20:01:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 20:01:04,015 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2020-10-26 20:01:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:04,017 INFO L225 Difference]: With dead ends: 792 [2020-10-26 20:01:04,017 INFO L226 Difference]: Without dead ends: 451 [2020-10-26 20:01:04,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=426, Invalid=1466, Unknown=0, NotChecked=0, Total=1892 [2020-10-26 20:01:04,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-26 20:01:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 325. [2020-10-26 20:01:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-26 20:01:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 367 transitions. [2020-10-26 20:01:04,045 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 367 transitions. Word has length 78 [2020-10-26 20:01:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:04,047 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 367 transitions. [2020-10-26 20:01:04,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 20:01:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 367 transitions. [2020-10-26 20:01:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 20:01:04,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:04,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:04,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:01:04,050 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1872120506, now seen corresponding path program 1 times [2020-10-26 20:01:04,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:04,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290382381] [2020-10-26 20:01:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:04,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:07,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 20:01:07,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:07,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3300 [2020-10-26 20:01:07,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:01:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:01:07,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:01:07,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:07,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:07,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:07,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:01:07,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:07,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:09,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:09,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 20:01:09,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:01:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2022 [2020-10-26 20:01:09,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:01:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:01:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 20:01:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-26 20:01:09,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290382381] [2020-10-26 20:01:09,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:09,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:01:09,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527795114] [2020-10-26 20:01:09,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:01:09,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:09,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:01:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:01:09,801 INFO L87 Difference]: Start difference. First operand 325 states and 367 transitions. Second operand 9 states. [2020-10-26 20:01:11,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:11,587 INFO L93 Difference]: Finished difference Result 1097 states and 1239 transitions. [2020-10-26 20:01:11,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:01:11,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-26 20:01:11,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:11,591 INFO L225 Difference]: With dead ends: 1097 [2020-10-26 20:01:11,591 INFO L226 Difference]: Without dead ends: 570 [2020-10-26 20:01:11,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-26 20:01:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-10-26 20:01:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 420. [2020-10-26 20:01:11,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-26 20:01:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 474 transitions. [2020-10-26 20:01:11,621 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 474 transitions. Word has length 82 [2020-10-26 20:01:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:11,622 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 474 transitions. [2020-10-26 20:01:11,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:01:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 474 transitions. [2020-10-26 20:01:11,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 20:01:11,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:11,624 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:11,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:01:11,624 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:11,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash -122024200, now seen corresponding path program 1 times [2020-10-26 20:01:11,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:11,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655980353] [2020-10-26 20:01:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:11,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1135 [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 20:01:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:12,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:12,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:12,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:01:12,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:12,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:13,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:13,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 20:01:13,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:01:13,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-10-26 20:01:13,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:01:13,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:01:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 20:01:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:01:13,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655980353] [2020-10-26 20:01:13,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:13,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:01:13,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321312988] [2020-10-26 20:01:13,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:01:13,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:13,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:01:13,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:01:13,756 INFO L87 Difference]: Start difference. First operand 420 states and 474 transitions. Second operand 9 states. [2020-10-26 20:01:15,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:15,056 INFO L93 Difference]: Finished difference Result 826 states and 920 transitions. [2020-10-26 20:01:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:01:15,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-26 20:01:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:15,060 INFO L225 Difference]: With dead ends: 826 [2020-10-26 20:01:15,060 INFO L226 Difference]: Without dead ends: 558 [2020-10-26 20:01:15,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-26 20:01:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-26 20:01:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 446. [2020-10-26 20:01:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-26 20:01:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 501 transitions. [2020-10-26 20:01:15,092 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 501 transitions. Word has length 82 [2020-10-26 20:01:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:15,093 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 501 transitions. [2020-10-26 20:01:15,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:01:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 501 transitions. [2020-10-26 20:01:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 20:01:15,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:15,095 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:01:15,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 20:01:15,095 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:15,095 INFO L82 PathProgramCache]: Analyzing trace with hash 579575674, now seen corresponding path program 2 times [2020-10-26 20:01:15,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:15,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524516553] [2020-10-26 20:01:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:15,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 20:01:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-26 20:01:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:01:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:01:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 20:01:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:01:15,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 20:01:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-26 20:01:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 20:01:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-26 20:01:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 20:01:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 20:01:15,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524516553] [2020-10-26 20:01:15,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:15,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:01:15,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730157728] [2020-10-26 20:01:15,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:01:15,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:15,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:01:15,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:01:15,949 INFO L87 Difference]: Start difference. First operand 446 states and 501 transitions. Second operand 9 states. [2020-10-26 20:01:17,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:17,193 INFO L93 Difference]: Finished difference Result 725 states and 807 transitions. [2020-10-26 20:01:17,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:01:17,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-26 20:01:17,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:17,196 INFO L225 Difference]: With dead ends: 725 [2020-10-26 20:01:17,196 INFO L226 Difference]: Without dead ends: 572 [2020-10-26 20:01:17,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-26 20:01:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-26 20:01:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 459. [2020-10-26 20:01:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-26 20:01:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 515 transitions. [2020-10-26 20:01:17,236 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 515 transitions. Word has length 82 [2020-10-26 20:01:17,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:17,236 INFO L481 AbstractCegarLoop]: Abstraction has 459 states and 515 transitions. [2020-10-26 20:01:17,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:01:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 515 transitions. [2020-10-26 20:01:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 20:01:17,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:17,238 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:01:17,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 20:01:17,238 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:17,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:17,239 INFO L82 PathProgramCache]: Analyzing trace with hash 2123555254, now seen corresponding path program 3 times [2020-10-26 20:01:17,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:17,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085096280] [2020-10-26 20:01:17,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:17,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:17,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 20:01:17,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:17,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 20:01:17,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-26 20:01:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 20:01:17,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:01:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:17,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:17,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:01:17,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:01:17,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:01:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:01:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:01:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:17,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-26 20:01:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:01:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:01:17,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:01:17,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 20:01:17,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:01:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 20:01:17,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:01:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:01:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-26 20:01:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 20:01:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:01:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 20:01:17,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085096280] [2020-10-26 20:01:17,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:01:17,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:01:17,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851879177] [2020-10-26 20:01:17,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:01:17,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:01:17,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:01:17,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:01:17,623 INFO L87 Difference]: Start difference. First operand 459 states and 515 transitions. Second operand 6 states. [2020-10-26 20:01:18,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:01:18,065 INFO L93 Difference]: Finished difference Result 983 states and 1097 transitions. [2020-10-26 20:01:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:01:18,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-26 20:01:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:01:18,069 INFO L225 Difference]: With dead ends: 983 [2020-10-26 20:01:18,069 INFO L226 Difference]: Without dead ends: 549 [2020-10-26 20:01:18,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:01:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-10-26 20:01:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 340. [2020-10-26 20:01:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-26 20:01:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 375 transitions. [2020-10-26 20:01:18,097 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 375 transitions. Word has length 82 [2020-10-26 20:01:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:01:18,097 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 375 transitions. [2020-10-26 20:01:18,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:01:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 375 transitions. [2020-10-26 20:01:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 20:01:18,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:01:18,099 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:01:18,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 20:01:18,099 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:01:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:01:18,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1469812168, now seen corresponding path program 4 times [2020-10-26 20:01:18,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:01:18,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998295549] [2020-10-26 20:01:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:01:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 20:01:18,125 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 20:01:18,125 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 20:01:18,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 20:01:18,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:01:18 BoogieIcfgContainer [2020-10-26 20:01:18,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:01:18,156 INFO L168 Benchmark]: Toolchain (without parser) took 134627.46 ms. Allocated memory was 151.0 MB in the beginning and 675.3 MB in the end (delta: 524.3 MB). Free memory was 126.4 MB in the beginning and 286.5 MB in the end (delta: -160.1 MB). Peak memory consumption was 365.3 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:18,157 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:01:18,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 114.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:18,158 INFO L168 Benchmark]: Boogie Preprocessor took 51.28 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:18,158 INFO L168 Benchmark]: RCFGBuilder took 790.70 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 125.1 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:18,159 INFO L168 Benchmark]: TraceAbstraction took 133383.06 ms. Allocated memory was 151.0 MB in the beginning and 675.3 MB in the end (delta: 524.3 MB). Free memory was 124.6 MB in the beginning and 286.5 MB in the end (delta: -161.9 MB). Peak memory consumption was 362.4 MB. Max. memory is 8.0 GB. [2020-10-26 20:01:18,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 386.63 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 114.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.28 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 790.70 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 125.1 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 133383.06 ms. Allocated memory was 151.0 MB in the beginning and 675.3 MB in the end (delta: 524.3 MB). Free memory was 124.6 MB in the beginning and 286.5 MB in the end (delta: -161.9 MB). Peak memory consumption was 362.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 108, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L116] unsigned int a, b, r; [L118] b = __VERIFIER_nondet_uint() [L120] a = 234770789 [L122] CALL, EXPR mp_add(a, b) [L34] unsigned char a0, a1, a2, a3; [L35] unsigned char b0, b1, b2, b3; [L36] unsigned char r0, r1, r2, r3; [L37] unsigned short carry; [L38] unsigned short partial_sum; [L39] unsigned int r; [L40] unsigned char i; [L41] unsigned char na, nb; [L42] a0 = a [L43] a1 = a >> 8 [L44] a2 = a >> 16U [L45] a3 = a >> 24U [L46] b0 = b [L47] b1 = b >> 8U [L48] b2 = b >> 16U [L49] b3 = b >> 24U [L50] na = (unsigned char)4 [L51] COND FALSE !(a3 == (unsigned char)0) [L60] nb = (unsigned char)4 [L61] COND TRUE b3 == (unsigned char)0 [L62] nb = nb - 1 [L63] COND TRUE b2 == (unsigned char)0 [L64] nb = nb - 1 [L65] COND TRUE b1 == (unsigned char)0 [L66] nb = nb - 1 [L70] carry = (unsigned short)0 [L71] i = (unsigned char)0 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND TRUE i == (unsigned char)0 [L76] partial_sum = partial_sum + a0 [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND TRUE i < nb [L82] COND TRUE i == (unsigned char)0 [L82] partial_sum = partial_sum + b0 [L83] COND FALSE !(i == (unsigned char)1) [L84] COND FALSE !(i == (unsigned char)2) [L85] COND FALSE !(i == (unsigned char)3) [L87] COND TRUE partial_sum > ((unsigned char)255) [L88] partial_sum = partial_sum & ((unsigned char)255) [L89] carry = (unsigned short)1 [L91] COND TRUE i == (unsigned char)0 [L91] r0 = (unsigned char)partial_sum [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND TRUE i == (unsigned char)1 [L77] partial_sum = partial_sum + a1 [L78] COND FALSE !(i == (unsigned char)2) [L79] COND FALSE !(i == (unsigned char)3) [L81] COND FALSE !(i < nb) [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND TRUE i == (unsigned char)1 [L92] r1 = (unsigned char)partial_sum [L93] COND FALSE !(i == (unsigned char)2) [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND FALSE !(i == (unsigned char)1) [L78] COND TRUE i == (unsigned char)2 [L78] partial_sum = partial_sum + a2 [L79] COND FALSE !(i == (unsigned char)3) [L81] COND FALSE !(i < nb) [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND TRUE i == (unsigned char)2 [L93] r2 = (unsigned char)partial_sum [L94] COND FALSE !(i == (unsigned char)3) [L96] i = i + (unsigned char)1 [L72] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L73] partial_sum = carry [L74] carry = (unsigned short)0 [L75] COND TRUE i < na [L76] COND FALSE !(i == (unsigned char)0) [L77] COND FALSE !(i == (unsigned char)1) [L78] COND FALSE !(i == (unsigned char)2) [L79] COND TRUE i == (unsigned char)3 [L79] partial_sum = partial_sum + a3 [L81] COND FALSE !(i < nb) [L87] COND FALSE !(partial_sum > ((unsigned char)255)) [L91] COND FALSE !(i == (unsigned char)0) [L92] COND FALSE !(i == (unsigned char)1) [L93] COND FALSE !(i == (unsigned char)2) [L94] COND TRUE i == (unsigned char)3 [L94] r3 = (unsigned char)partial_sum [L96] i = i + (unsigned char)1 [L72] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L99] COND FALSE !(i < (unsigned char)4) [L108] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L110] return r; [L122] RET, EXPR mp_add(a, b) [L122] r = mp_add(a, b) [L124] CALL __VERIFIER_assert(r == a + b) [L16] COND TRUE !(cond) [L17] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "byte_add_1-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 133.2s, OverallIterations: 19, TraceHistogramMax: 4, AutomataDifference: 26.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1435 SDtfs, 6051 SDslu, 507 SDs, 0 SdLazy, 9106 SolverSat, 750 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 337 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=465occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 1170 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 105.5s InterpolantComputationTime, 1081 NumberOfCodeBlocks, 1081 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 981 ConstructedInterpolants, 0 QuantifiedInterpolants, 738527 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 462/661 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...