/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:00:33,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:00:33,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:00:33,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:00:33,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:00:33,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:00:33,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:00:33,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:00:33,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:00:33,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:00:33,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:00:33,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:00:33,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:00:33,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:00:33,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:00:33,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:00:33,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:00:33,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:00:33,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:00:33,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:00:33,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:00:33,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:00:33,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:00:33,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:00:33,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:00:33,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:00:33,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:00:33,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:00:33,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:00:33,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:00:33,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:00:33,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:00:33,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:00:33,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:00:33,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:00:33,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:00:33,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:00:33,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:00:33,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:00:33,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:00:33,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:00:33,752 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 [2020-10-28 15:00:33,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:00:33,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:00:33,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:00:33,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:00:33,806 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:00:33,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:00:33,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:00:33,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:00:33,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:00:33,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:00:33,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:00:33,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:00:33,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:00:33,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:00:33,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:00:33,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:00:33,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:00:33,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:00:33,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:00:33,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:00:33,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:00:33,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:00:33,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:00:33,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:00:33,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:00:33,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:00:33,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:00:33,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:00:33,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:00:33,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:00:34,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:00:34,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:00:34,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:00:34,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:00:34,292 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:00:34,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-10-28 15:00:34,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6c4b6f35/54d02ca73c8e44128c21a81183cceccc/FLAGc89fcde12 [2020-10-28 15:00:35,073 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:00:35,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-10-28 15:00:35,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6c4b6f35/54d02ca73c8e44128c21a81183cceccc/FLAGc89fcde12 [2020-10-28 15:00:35,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6c4b6f35/54d02ca73c8e44128c21a81183cceccc [2020-10-28 15:00:35,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:00:35,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:00:35,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:00:35,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:00:35,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:00:35,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3536e044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35, skipping insertion in model container [2020-10-28 15:00:35,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:00:35,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:00:35,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:00:35,792 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:00:35,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:00:35,887 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:00:35,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35 WrapperNode [2020-10-28 15:00:35,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:00:35,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:00:35,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:00:35,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:00:35,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (1/1) ... [2020-10-28 15:00:35,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:00:35,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:00:35,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:00:35,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:00:35,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (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 [2020-10-28 15:00:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:00:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:00:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:00:36,032 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:00:36,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:00:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:00:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:00:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:00:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:00:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:00:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:00:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:00:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:00:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:00:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:00:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:00:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:00:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:00:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:00:36,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:00:36,830 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 15:00:36,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:00:36 BoogieIcfgContainer [2020-10-28 15:00:36,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:00:36,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:00:36,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:00:36,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:00:36,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:00:35" (1/3) ... [2020-10-28 15:00:36,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369764dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:00:36, skipping insertion in model container [2020-10-28 15:00:36,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:00:35" (2/3) ... [2020-10-28 15:00:36,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369764dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:00:36, skipping insertion in model container [2020-10-28 15:00:36,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:00:36" (3/3) ... [2020-10-28 15:00:36,843 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-10-28 15:00:36,857 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:00:36,861 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:00:36,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:00:36,905 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:00:36,905 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:00:36,906 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:00:36,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:00:36,906 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:00:36,906 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:00:36,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:00:36,907 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:00:36,931 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-28 15:00:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 15:00:36,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:36,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:36,939 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:36,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:36,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1744602350, now seen corresponding path program 1 times [2020-10-28 15:00:36,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:36,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144259562] [2020-10-28 15:00:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:37,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:37,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:37,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:00:37,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-28 15:00:37,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:37,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:00:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:00:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:00:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:37,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:37,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:37,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:37,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:00:37,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:37,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:37,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:37,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:37,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:37,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144259562] [2020-10-28 15:00:37,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:37,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:00:37,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331308163] [2020-10-28 15:00:37,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:00:37,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:37,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:00:37,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:00:37,638 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 5 states. [2020-10-28 15:00:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:38,048 INFO L93 Difference]: Finished difference Result 131 states and 201 transitions. [2020-10-28 15:00:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:00:38,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 15:00:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:38,061 INFO L225 Difference]: With dead ends: 131 [2020-10-28 15:00:38,061 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 15:00:38,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:00:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 15:00:38,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 58. [2020-10-28 15:00:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 15:00:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2020-10-28 15:00:38,118 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 13 [2020-10-28 15:00:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:38,118 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2020-10-28 15:00:38,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:00:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2020-10-28 15:00:38,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 15:00:38,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:38,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:38,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:00:38,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:38,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1842893151, now seen corresponding path program 1 times [2020-10-28 15:00:38,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:38,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710980525] [2020-10-28 15:00:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:38,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:38,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:00:38,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 15:00:38,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:38,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:00:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:38,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:00:38,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:00:38,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:38,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:38,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:38,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:38,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:38,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 15:00:38,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:38,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:38,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710980525] [2020-10-28 15:00:38,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:38,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:00:38,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860988414] [2020-10-28 15:00:38,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:00:38,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:38,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:00:38,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:00:38,397 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand 5 states. [2020-10-28 15:00:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:38,872 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2020-10-28 15:00:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:00:38,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 15:00:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:38,874 INFO L225 Difference]: With dead ends: 88 [2020-10-28 15:00:38,874 INFO L226 Difference]: Without dead ends: 85 [2020-10-28 15:00:38,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:00:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-28 15:00:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 57. [2020-10-28 15:00:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 15:00:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2020-10-28 15:00:38,887 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 13 [2020-10-28 15:00:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:38,888 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2020-10-28 15:00:38,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:00:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2020-10-28 15:00:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:00:38,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:38,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:38,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:00:38,890 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:38,890 INFO L82 PathProgramCache]: Analyzing trace with hash -9522221, now seen corresponding path program 1 times [2020-10-28 15:00:38,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:38,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540144216] [2020-10-28 15:00:38,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:39,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:39,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 15:00:39,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:00:39,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-28 15:00:39,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:39,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:39,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:00:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:39,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:00:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:39,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:39,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:39,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:39,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:00:39,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:39,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:39,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540144216] [2020-10-28 15:00:39,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:39,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:00:39,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543758326] [2020-10-28 15:00:39,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:00:39,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:39,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:00:39,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:00:39,358 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand 5 states. [2020-10-28 15:00:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:39,611 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2020-10-28 15:00:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:00:39,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-28 15:00:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:39,613 INFO L225 Difference]: With dead ends: 59 [2020-10-28 15:00:39,613 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 15:00:39,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:00:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 15:00:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-28 15:00:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 15:00:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2020-10-28 15:00:39,623 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 16 [2020-10-28 15:00:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:39,623 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2020-10-28 15:00:39,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:00:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2020-10-28 15:00:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 15:00:39,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:39,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:39,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:00:39,625 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:39,626 INFO L82 PathProgramCache]: Analyzing trace with hash -918022915, now seen corresponding path program 1 times [2020-10-28 15:00:39,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:39,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727841324] [2020-10-28 15:00:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:39,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 15:00:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:00:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 15:00:39,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:39,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:00:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:00:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:39,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:39,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:39,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:00:39,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:39,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:39,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727841324] [2020-10-28 15:00:39,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:39,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:00:39,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074423645] [2020-10-28 15:00:39,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:00:39,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:39,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:00:39,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:00:39,978 INFO L87 Difference]: Start difference. First operand 56 states and 74 transitions. Second operand 5 states. [2020-10-28 15:00:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:40,187 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-10-28 15:00:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:00:40,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-28 15:00:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:40,189 INFO L225 Difference]: With dead ends: 58 [2020-10-28 15:00:40,189 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 15:00:40,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:00:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 15:00:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-28 15:00:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 15:00:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2020-10-28 15:00:40,199 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 16 [2020-10-28 15:00:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:40,199 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2020-10-28 15:00:40,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:00:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2020-10-28 15:00:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 15:00:40,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:40,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:40,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:00:40,201 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:40,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:40,202 INFO L82 PathProgramCache]: Analyzing trace with hash -295234700, now seen corresponding path program 1 times [2020-10-28 15:00:40,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:40,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696340998] [2020-10-28 15:00:40,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:40,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:40,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:00:40,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:00:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-28 15:00:40,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:40,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:40,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:00:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 15:00:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:00:40,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:40,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:40,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:40,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:00:40,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:40,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:40,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696340998] [2020-10-28 15:00:40,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:40,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:00:40,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340167825] [2020-10-28 15:00:40,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:00:40,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:40,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:00:40,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:00:40,762 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand 5 states. [2020-10-28 15:00:40,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:40,989 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-10-28 15:00:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:00:40,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-28 15:00:40,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:40,990 INFO L225 Difference]: With dead ends: 57 [2020-10-28 15:00:40,990 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 15:00:40,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:40,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 15:00:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-28 15:00:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 15:00:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2020-10-28 15:00:40,998 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 17 [2020-10-28 15:00:40,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:40,998 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2020-10-28 15:00:40,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:00:40,999 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2020-10-28 15:00:40,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 15:00:41,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:41,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:41,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:00:41,000 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:41,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1619790700, now seen corresponding path program 1 times [2020-10-28 15:00:41,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:41,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3450611] [2020-10-28 15:00:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:41,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:41,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:00:41,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:41,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 15:00:41,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:41,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:00:41,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:41,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:00:41,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:41,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:41,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:41,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:00:41,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:41,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:41,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:41,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3450611] [2020-10-28 15:00:41,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:41,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:41,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127558270] [2020-10-28 15:00:41,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:41,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:41,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:41,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:41,293 INFO L87 Difference]: Start difference. First operand 52 states and 68 transitions. Second operand 6 states. [2020-10-28 15:00:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:41,586 INFO L93 Difference]: Finished difference Result 88 states and 117 transitions. [2020-10-28 15:00:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:00:41,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-28 15:00:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:41,588 INFO L225 Difference]: With dead ends: 88 [2020-10-28 15:00:41,588 INFO L226 Difference]: Without dead ends: 85 [2020-10-28 15:00:41,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:00:41,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-28 15:00:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 51. [2020-10-28 15:00:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 15:00:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-28 15:00:41,602 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 17 [2020-10-28 15:00:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:41,602 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-28 15:00:41,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-28 15:00:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 15:00:41,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:41,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:41,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:00:41,606 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:41,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1619360048, now seen corresponding path program 1 times [2020-10-28 15:00:41,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:41,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996066571] [2020-10-28 15:00:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:41,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:41,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:41,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:41,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:00:41,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-28 15:00:41,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:41,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:00:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:00:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:41,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:41,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:41,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:41,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:41,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:00:41,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:41,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:41,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:41,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996066571] [2020-10-28 15:00:41,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:41,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:41,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490200794] [2020-10-28 15:00:41,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:41,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:41,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:41,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:41,945 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 6 states. [2020-10-28 15:00:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:42,279 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2020-10-28 15:00:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:00:42,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-28 15:00:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:42,281 INFO L225 Difference]: With dead ends: 77 [2020-10-28 15:00:42,281 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 15:00:42,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:00:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 15:00:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 50. [2020-10-28 15:00:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 15:00:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-10-28 15:00:42,295 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 17 [2020-10-28 15:00:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:42,295 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-10-28 15:00:42,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-10-28 15:00:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 15:00:42,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:42,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:42,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:00:42,297 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1606092420, now seen corresponding path program 1 times [2020-10-28 15:00:42,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:42,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060811793] [2020-10-28 15:00:42,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:42,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:42,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:00:42,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:00:42,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-28 15:00:42,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:42,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:42,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:00:42,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 15:00:42,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:00:42,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:42,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:42,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:42,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:42,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:00:42,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:42,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:42,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060811793] [2020-10-28 15:00:42,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:42,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:00:42,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413724946] [2020-10-28 15:00:42,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:00:42,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:42,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:00:42,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:00:42,704 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 5 states. [2020-10-28 15:00:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:42,923 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-10-28 15:00:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:00:42,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-28 15:00:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:42,925 INFO L225 Difference]: With dead ends: 54 [2020-10-28 15:00:42,925 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 15:00:42,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:00:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 15:00:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-28 15:00:42,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 15:00:42,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2020-10-28 15:00:42,938 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 17 [2020-10-28 15:00:42,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:42,939 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2020-10-28 15:00:42,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:00:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2020-10-28 15:00:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 15:00:42,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:42,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:42,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:00:42,943 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:42,944 INFO L82 PathProgramCache]: Analyzing trace with hash -121586766, now seen corresponding path program 1 times [2020-10-28 15:00:42,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:42,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104193867] [2020-10-28 15:00:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:42,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:43,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:43,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:00:43,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:43,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 15:00:43,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:43,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:00:43,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:00:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:00:43,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:43,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:43,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:43,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:00:43,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:43,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:43,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:43,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104193867] [2020-10-28 15:00:43,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:43,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:43,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77190647] [2020-10-28 15:00:43,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:43,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:43,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:43,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:43,243 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand 6 states. [2020-10-28 15:00:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:43,492 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2020-10-28 15:00:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:00:43,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 15:00:43,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:43,494 INFO L225 Difference]: With dead ends: 64 [2020-10-28 15:00:43,494 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 15:00:43,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:00:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 15:00:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2020-10-28 15:00:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 15:00:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-10-28 15:00:43,501 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 18 [2020-10-28 15:00:43,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:43,503 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-10-28 15:00:43,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:43,503 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2020-10-28 15:00:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 15:00:43,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:43,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:43,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:00:43,509 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:43,510 INFO L82 PathProgramCache]: Analyzing trace with hash -73872744, now seen corresponding path program 1 times [2020-10-28 15:00:43,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:43,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490610421] [2020-10-28 15:00:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:43,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:00:43,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 15:00:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:43,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:00:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:00:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:43,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:43,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:43,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:00:43,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:43,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:43,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490610421] [2020-10-28 15:00:43,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:43,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:43,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14045167] [2020-10-28 15:00:43,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:43,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:43,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:43,747 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 6 states. [2020-10-28 15:00:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:43,971 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-28 15:00:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:00:43,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 15:00:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:43,972 INFO L225 Difference]: With dead ends: 50 [2020-10-28 15:00:43,972 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 15:00:43,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:00:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 15:00:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-28 15:00:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 15:00:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-28 15:00:43,988 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 18 [2020-10-28 15:00:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:43,991 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-28 15:00:43,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-28 15:00:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 15:00:43,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:43,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:43,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:00:43,994 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:43,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:43,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1326041788, now seen corresponding path program 1 times [2020-10-28 15:00:43,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:43,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38875333] [2020-10-28 15:00:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:44,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:44,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:44,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:00:44,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 15:00:44,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:44,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:00:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:00:44,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:44,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:44,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:44,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 15:00:44,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:44,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:44,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38875333] [2020-10-28 15:00:44,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:44,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:44,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34972036] [2020-10-28 15:00:44,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:44,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:44,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:44,334 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 6 states. [2020-10-28 15:00:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:44,662 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2020-10-28 15:00:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:00:44,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 15:00:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:44,664 INFO L225 Difference]: With dead ends: 75 [2020-10-28 15:00:44,664 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 15:00:44,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:00:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 15:00:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 44. [2020-10-28 15:00:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 15:00:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2020-10-28 15:00:44,674 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 18 [2020-10-28 15:00:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:44,674 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-28 15:00:44,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-10-28 15:00:44,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 15:00:44,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:44,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:44,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 15:00:44,676 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:44,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:44,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1339401734, now seen corresponding path program 1 times [2020-10-28 15:00:44,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:44,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780574073] [2020-10-28 15:00:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:44,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:44,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:00:44,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 15:00:44,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:44,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:00:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:00:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:45,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:45,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:45,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:00:45,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:45,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:45,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:45,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780574073] [2020-10-28 15:00:45,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:45,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:45,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480836803] [2020-10-28 15:00:45,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:45,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:45,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:45,077 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 6 states. [2020-10-28 15:00:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:45,368 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2020-10-28 15:00:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:00:45,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 15:00:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:45,369 INFO L225 Difference]: With dead ends: 67 [2020-10-28 15:00:45,369 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 15:00:45,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:00:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 15:00:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2020-10-28 15:00:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 15:00:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-10-28 15:00:45,379 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 18 [2020-10-28 15:00:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:45,379 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-10-28 15:00:45,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-10-28 15:00:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 15:00:45,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:45,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:45,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 15:00:45,381 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:45,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:45,381 INFO L82 PathProgramCache]: Analyzing trace with hash 568075593, now seen corresponding path program 1 times [2020-10-28 15:00:45,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:45,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233524666] [2020-10-28 15:00:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:45,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:45,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:45,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 15:00:45,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 15:00:45,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:45,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:00:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:00:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:45,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:45,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:45,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:45,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:00:45,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:45,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:45,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:45,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233524666] [2020-10-28 15:00:45,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:45,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:45,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992450046] [2020-10-28 15:00:45,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:45,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:45,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:45,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:45,701 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 6 states. [2020-10-28 15:00:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:45,972 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-28 15:00:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:00:45,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-28 15:00:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:45,973 INFO L225 Difference]: With dead ends: 63 [2020-10-28 15:00:45,973 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 15:00:45,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:00:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 15:00:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2020-10-28 15:00:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 15:00:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-28 15:00:45,990 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 19 [2020-10-28 15:00:45,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:45,990 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-28 15:00:45,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-28 15:00:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 15:00:45,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:45,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:45,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 15:00:45,993 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:45,993 INFO L82 PathProgramCache]: Analyzing trace with hash 525748162, now seen corresponding path program 1 times [2020-10-28 15:00:45,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:45,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41329949] [2020-10-28 15:00:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:46,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 15:00:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-28 15:00:46,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:46,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:00:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:00:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:00:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:46,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:46,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41329949] [2020-10-28 15:00:46,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:46,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:46,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23012649] [2020-10-28 15:00:46,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:46,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:46,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:46,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:46,365 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 6 states. [2020-10-28 15:00:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:46,637 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-10-28 15:00:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:00:46,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-28 15:00:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:46,639 INFO L225 Difference]: With dead ends: 56 [2020-10-28 15:00:46,639 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 15:00:46,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:00:46,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 15:00:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-28 15:00:46,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 15:00:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-28 15:00:46,645 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 19 [2020-10-28 15:00:46,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:46,645 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-28 15:00:46,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-28 15:00:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 15:00:46,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:46,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:46,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 15:00:46,646 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:46,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2004919734, now seen corresponding path program 1 times [2020-10-28 15:00:46,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:46,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008705238] [2020-10-28 15:00:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:46,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:46,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 15:00:46,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 15:00:46,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:46,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:00:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:00:46,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:46,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:46,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:46,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:46,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:47,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:00:47,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:47,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:47,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:47,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008705238] [2020-10-28 15:00:47,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:47,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:00:47,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590455616] [2020-10-28 15:00:47,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:00:47,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:47,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:00:47,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:47,010 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 6 states. [2020-10-28 15:00:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:47,269 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-28 15:00:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:00:47,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-28 15:00:47,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:47,271 INFO L225 Difference]: With dead ends: 43 [2020-10-28 15:00:47,271 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 15:00:47,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:00:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 15:00:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-28 15:00:47,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 15:00:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-28 15:00:47,277 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 19 [2020-10-28 15:00:47,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:47,277 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-28 15:00:47,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:00:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-28 15:00:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 15:00:47,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:47,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:00:47,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 15:00:47,278 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:47,279 INFO L82 PathProgramCache]: Analyzing trace with hash 430467162, now seen corresponding path program 1 times [2020-10-28 15:00:47,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:47,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95695851] [2020-10-28 15:00:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:47,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:47,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:47,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 15:00:47,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:00:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 15:00:47,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:47,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:00:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:00:47,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:47,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:47,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:00:47,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:47,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:47,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95695851] [2020-10-28 15:00:47,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:47,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:00:47,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979572660] [2020-10-28 15:00:47,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:00:47,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:47,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:00:47,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:00:47,630 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-10-28 15:00:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:47,939 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2020-10-28 15:00:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:00:47,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-28 15:00:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:47,941 INFO L225 Difference]: With dead ends: 73 [2020-10-28 15:00:47,941 INFO L226 Difference]: Without dead ends: 70 [2020-10-28 15:00:47,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:00:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-28 15:00:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2020-10-28 15:00:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 15:00:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-28 15:00:47,948 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 20 [2020-10-28 15:00:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:47,948 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-28 15:00:47,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:00:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-28 15:00:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 15:00:47,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:47,949 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] [2020-10-28 15:00:47,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 15:00:47,950 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1563061082, now seen corresponding path program 1 times [2020-10-28 15:00:47,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:47,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715446791] [2020-10-28 15:00:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:48,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:48,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 15:00:48,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 15:00:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-28 15:00:48,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:48,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:00:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:00:48,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:48,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:48,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:48,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:00:48,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:48,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:48,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715446791] [2020-10-28 15:00:48,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:48,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:00:48,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873706322] [2020-10-28 15:00:48,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:00:48,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:48,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:00:48,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:00:48,938 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 5 states. [2020-10-28 15:00:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:49,077 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-28 15:00:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:00:49,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-28 15:00:49,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:49,078 INFO L225 Difference]: With dead ends: 48 [2020-10-28 15:00:49,078 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 15:00:49,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:00:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 15:00:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-28 15:00:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 15:00:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-28 15:00:49,084 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 21 [2020-10-28 15:00:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:49,085 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-28 15:00:49,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:00:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-28 15:00:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 15:00:49,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:49,085 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] [2020-10-28 15:00:49,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 15:00:49,086 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1210271979, now seen corresponding path program 1 times [2020-10-28 15:00:49,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:49,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940326566] [2020-10-28 15:00:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:49,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:49,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:49,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 15:00:49,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:00:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-28 15:00:49,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:49,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:00:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 15:00:49,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:00:49,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:49,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:49,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:49,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:49,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:00:49,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:49,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:00:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:49,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940326566] [2020-10-28 15:00:49,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:49,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:00:49,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385055193] [2020-10-28 15:00:49,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:00:49,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:49,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:00:49,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:00:49,768 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-10-28 15:00:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:49,867 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-28 15:00:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:00:49,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 15:00:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:49,868 INFO L225 Difference]: With dead ends: 47 [2020-10-28 15:00:49,868 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 15:00:49,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:00:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 15:00:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 15:00:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 15:00:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-28 15:00:49,876 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 22 [2020-10-28 15:00:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:49,876 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-28 15:00:49,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:00:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-28 15:00:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 15:00:49,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:00:49,877 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] [2020-10-28 15:00:49,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 15:00:49,877 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:00:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:00:49,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1546610434, now seen corresponding path program 1 times [2020-10-28 15:00:49,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:00:49,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729374822] [2020-10-28 15:00:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:00:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:50,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:50,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:00:50,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:00:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-28 15:00:50,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:50,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:00:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:00:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:00:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:00:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:00:50,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:00:50,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:00:50,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:00:50,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:00:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:00:50,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:00:50,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:00:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:00:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:00:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:00:50,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:00:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:00:50,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729374822] [2020-10-28 15:00:50,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:00:50,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:00:50,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788545366] [2020-10-28 15:00:50,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:00:50,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:00:50,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:00:50,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:00:50,706 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 8 states. [2020-10-28 15:00:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:00:51,059 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 15:00:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:00:51,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-28 15:00:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:00:51,060 INFO L225 Difference]: With dead ends: 52 [2020-10-28 15:00:51,060 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:00:51,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:00:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:00:51,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:00:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:00:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:00:51,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-10-28 15:00:51,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:00:51,063 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:00:51,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:00:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:00:51,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:00:51,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 15:00:51,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:00:51,194 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 22 [2020-10-28 15:00:51,663 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 10 [2020-10-28 15:00:51,786 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 15:00:51,787 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 15:00:51,787 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 15:00:51,787 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 15:00:51,787 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:00:51,787 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__tmp_383_0~0 |old(~__tmp_383_0~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= ~__return_305~0 |old(~__return_305~0)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~__tmp_259_0~0 |old(~__tmp_259_0~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-28 15:00:51,788 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:00:51,788 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:00:51,788 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:00:51,788 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:00:51,788 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:00:51,788 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:00:51,788 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-28 15:00:51,788 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:00:51,788 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:00:51,788 INFO L270 CegarLoopResult]: At program point L126(line 126) the Hoare annotation is: false [2020-10-28 15:00:51,788 INFO L274 CegarLoopResult]: For program point L126-1(line 126) no Hoare annotation was computed. [2020-10-28 15:00:51,789 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 402) no Hoare annotation was computed. [2020-10-28 15:00:51,789 INFO L270 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: false [2020-10-28 15:00:51,789 INFO L274 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-10-28 15:00:51,789 INFO L270 CegarLoopResult]: At program point L176(line 176) the Hoare annotation is: false [2020-10-28 15:00:51,790 INFO L274 CegarLoopResult]: For program point L176-1(line 176) no Hoare annotation was computed. [2020-10-28 15:00:51,790 INFO L270 CegarLoopResult]: At program point L366(line 366) the Hoare annotation is: false [2020-10-28 15:00:51,790 INFO L270 CegarLoopResult]: At program point L333(line 333) the Hoare annotation is: false [2020-10-28 15:00:51,790 INFO L274 CegarLoopResult]: For program point L366-1(line 366) no Hoare annotation was computed. [2020-10-28 15:00:51,791 INFO L274 CegarLoopResult]: For program point L333-1(line 333) no Hoare annotation was computed. [2020-10-28 15:00:51,791 INFO L274 CegarLoopResult]: For program point L234(lines 234 242) no Hoare annotation was computed. [2020-10-28 15:00:51,792 INFO L274 CegarLoopResult]: For program point L152(lines 152 160) no Hoare annotation was computed. [2020-10-28 15:00:51,792 INFO L270 CegarLoopResult]: At program point L309(line 309) the Hoare annotation is: false [2020-10-28 15:00:51,792 INFO L274 CegarLoopResult]: For program point L20(lines 20 401) no Hoare annotation was computed. [2020-10-28 15:00:51,792 INFO L274 CegarLoopResult]: For program point L276(lines 276 391) no Hoare annotation was computed. [2020-10-28 15:00:51,792 INFO L274 CegarLoopResult]: For program point L309-1(line 309) no Hoare annotation was computed. [2020-10-28 15:00:51,792 INFO L274 CegarLoopResult]: For program point L70(lines 70 94) no Hoare annotation was computed. [2020-10-28 15:00:51,793 INFO L270 CegarLoopResult]: At program point L384(lines 282 391) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (<= 0 main_~main__t~0)) [2020-10-28 15:00:51,793 INFO L270 CegarLoopResult]: At program point L351(lines 32 395) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-10-28 15:00:51,794 INFO L274 CegarLoopResult]: For program point L186(lines 186 196) no Hoare annotation was computed. [2020-10-28 15:00:51,794 INFO L274 CegarLoopResult]: For program point L376(lines 376 385) no Hoare annotation was computed. [2020-10-28 15:00:51,794 INFO L274 CegarLoopResult]: For program point L343(lines 343 352) no Hoare annotation was computed. [2020-10-28 15:00:51,794 INFO L274 CegarLoopResult]: For program point L112(lines 112 203) no Hoare annotation was computed. [2020-10-28 15:00:51,794 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 402) no Hoare annotation was computed. [2020-10-28 15:00:51,794 INFO L270 CegarLoopResult]: At program point L236(line 236) the Hoare annotation is: false [2020-10-28 15:00:51,794 INFO L274 CegarLoopResult]: For program point L236-1(line 236) no Hoare annotation was computed. [2020-10-28 15:00:51,794 INFO L270 CegarLoopResult]: At program point L195(lines 56 253) the Hoare annotation is: (and (<= 1 main_~main__t~0) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1))) [2020-10-28 15:00:51,794 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 15 402) the Hoare annotation is: (and (= |old(~__tmp_259_0~0)| ~__tmp_259_0~0) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2020-10-28 15:00:51,795 INFO L270 CegarLoopResult]: At program point L154(line 154) the Hoare annotation is: false [2020-10-28 15:00:51,795 INFO L274 CegarLoopResult]: For program point L154-1(line 154) no Hoare annotation was computed. [2020-10-28 15:00:51,795 INFO L270 CegarLoopResult]: At program point L278(line 278) the Hoare annotation is: false [2020-10-28 15:00:51,795 INFO L274 CegarLoopResult]: For program point L278-1(line 278) no Hoare annotation was computed. [2020-10-28 15:00:51,795 INFO L274 CegarLoopResult]: For program point L105(lines 105 209) no Hoare annotation was computed. [2020-10-28 15:00:51,795 INFO L270 CegarLoopResult]: At program point L72(line 72) the Hoare annotation is: false [2020-10-28 15:00:51,795 INFO L274 CegarLoopResult]: For program point L39(lines 39 255) no Hoare annotation was computed. [2020-10-28 15:00:51,796 INFO L274 CegarLoopResult]: For program point L72-1(line 72) no Hoare annotation was computed. [2020-10-28 15:00:51,796 INFO L274 CegarLoopResult]: For program point L295(lines 295 317) no Hoare annotation was computed. [2020-10-28 15:00:51,796 INFO L270 CegarLoopResult]: At program point L188(line 188) the Hoare annotation is: false [2020-10-28 15:00:51,796 INFO L274 CegarLoopResult]: For program point L188-1(line 188) no Hoare annotation was computed. [2020-10-28 15:00:51,796 INFO L270 CegarLoopResult]: At program point L378(line 378) the Hoare annotation is: false [2020-10-28 15:00:51,796 INFO L270 CegarLoopResult]: At program point L345(line 345) the Hoare annotation is: false [2020-10-28 15:00:51,796 INFO L274 CegarLoopResult]: For program point L378-1(line 378) no Hoare annotation was computed. [2020-10-28 15:00:51,796 INFO L274 CegarLoopResult]: For program point L345-1(line 345) no Hoare annotation was computed. [2020-10-28 15:00:51,796 INFO L270 CegarLoopResult]: At program point L114(line 114) the Hoare annotation is: false [2020-10-28 15:00:51,796 INFO L274 CegarLoopResult]: For program point L114-1(line 114) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L274 CegarLoopResult]: For program point L32(lines 32 395) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L274 CegarLoopResult]: For program point L288(lines 288 390) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L274 CegarLoopResult]: For program point L222(lines 222 244) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L274 CegarLoopResult]: For program point L24(lines 24 396) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L274 CegarLoopResult]: For program point L82(lines 82 92) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L274 CegarLoopResult]: For program point L140(lines 140 162) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L270 CegarLoopResult]: At program point L297(line 297) the Hoare annotation is: false [2020-10-28 15:00:51,797 INFO L274 CegarLoopResult]: For program point L297-1(line 297) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L274 CegarLoopResult]: For program point L124(lines 124 201) no Hoare annotation was computed. [2020-10-28 15:00:51,797 INFO L277 CegarLoopResult]: At program point L314(lines 32 395) the Hoare annotation is: true [2020-10-28 15:00:51,798 INFO L274 CegarLoopResult]: For program point L215(lines 215 250) no Hoare annotation was computed. [2020-10-28 15:00:51,798 INFO L274 CegarLoopResult]: For program point L50(lines 50 253) no Hoare annotation was computed. [2020-10-28 15:00:51,798 INFO L274 CegarLoopResult]: For program point L174(lines 174 198) no Hoare annotation was computed. [2020-10-28 15:00:51,798 INFO L274 CegarLoopResult]: For program point L364(lines 364 387) no Hoare annotation was computed. [2020-10-28 15:00:51,798 INFO L274 CegarLoopResult]: For program point L331(lines 331 354) no Hoare annotation was computed. [2020-10-28 15:00:51,798 INFO L274 CegarLoopResult]: For program point L265(lines 265 393) no Hoare annotation was computed. [2020-10-28 15:00:51,798 INFO L274 CegarLoopResult]: For program point L133(lines 133 200) no Hoare annotation was computed. [2020-10-28 15:00:51,798 INFO L270 CegarLoopResult]: At program point L224(line 224) the Hoare annotation is: false [2020-10-28 15:00:51,799 INFO L274 CegarLoopResult]: For program point L224-1(line 224) no Hoare annotation was computed. [2020-10-28 15:00:51,799 INFO L270 CegarLoopResult]: At program point L249(lines 101 251) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-10-28 15:00:51,799 INFO L270 CegarLoopResult]: At program point L84(line 84) the Hoare annotation is: false [2020-10-28 15:00:51,799 INFO L274 CegarLoopResult]: For program point L84-1(line 84) no Hoare annotation was computed. [2020-10-28 15:00:51,799 INFO L274 CegarLoopResult]: For program point L307(lines 307 315) no Hoare annotation was computed. [2020-10-28 15:00:51,799 INFO L270 CegarLoopResult]: At program point L142(line 142) the Hoare annotation is: false [2020-10-28 15:00:51,799 INFO L274 CegarLoopResult]: For program point L142-1(line 142) no Hoare annotation was computed. [2020-10-28 15:00:51,799 INFO L274 CegarLoopResult]: For program point L101(lines 101 251) no Hoare annotation was computed. [2020-10-28 15:00:51,799 INFO L274 CegarLoopResult]: For program point L324(lines 324 389) no Hoare annotation was computed. [2020-10-28 15:00:51,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:00:51 BoogieIcfgContainer [2020-10-28 15:00:51,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:00:51,832 INFO L168 Benchmark]: Toolchain (without parser) took 16388.52 ms. Allocated memory was 125.8 MB in the beginning and 337.6 MB in the end (delta: 211.8 MB). Free memory was 101.5 MB in the beginning and 302.3 MB in the end (delta: -200.8 MB). Peak memory consumption was 196.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:00:51,836 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:00:51,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.14 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 88.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 15:00:51,839 INFO L168 Benchmark]: Boogie Preprocessor took 48.59 ms. Allocated memory is still 125.8 MB. Free memory was 88.2 MB in the beginning and 86.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 15:00:51,839 INFO L168 Benchmark]: RCFGBuilder took 894.09 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 86.5 MB in the beginning and 127.3 MB in the end (delta: -40.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-10-28 15:00:51,842 INFO L168 Benchmark]: TraceAbstraction took 14992.66 ms. Allocated memory was 159.4 MB in the beginning and 337.6 MB in the end (delta: 178.3 MB). Free memory was 126.7 MB in the beginning and 302.3 MB in the end (delta: -175.6 MB). Peak memory consumption was 186.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:00:51,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 435.14 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 88.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.59 ms. Allocated memory is still 125.8 MB. Free memory was 88.2 MB in the beginning and 86.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 894.09 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 86.5 MB in the beginning and 127.3 MB in the end (delta: -40.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14992.66 ms. Allocated memory was 159.4 MB in the beginning and 337.6 MB in the end (delta: 178.3 MB). Free memory was 126.7 MB in the beginning and 302.3 MB in the end (delta: -175.6 MB). Peak memory consumption was 186.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t < main__tagbuf_len + 1 - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 282]: Loop Invariant Derived loop invariant: (main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.1s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 908 SDtfs, 1195 SDslu, 1124 SDs, 0 SdLazy, 2184 SolverSat, 297 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 236 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 46 PreInvPairs, 55 NumberOfFragments, 109 HoareAnnotationTreeSize, 46 FomulaSimplifications, 47689 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 28 FomulaSimplificationsInter, 14668 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 341 NumberOfCodeBlocks, 341 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 26479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...