/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 11:58:28,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 11:58:28,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 11:58:28,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 11:58:28,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 11:58:28,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 11:58:28,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 11:58:28,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 11:58:28,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 11:58:28,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 11:58:28,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 11:58:28,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 11:58:28,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 11:58:28,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 11:58:28,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 11:58:28,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 11:58:28,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 11:58:28,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 11:58:28,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 11:58:28,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 11:58:28,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 11:58:28,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 11:58:28,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 11:58:28,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 11:58:28,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 11:58:28,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 11:58:28,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 11:58:28,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 11:58:28,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 11:58:28,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 11:58:28,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 11:58:28,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 11:58:28,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 11:58:28,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 11:58:28,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 11:58:28,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 11:58:28,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 11:58:28,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 11:58:28,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 11:58:28,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 11:58:28,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 11:58:28,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 11:58:28,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 11:58:28,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 11:58:28,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 11:58:28,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 11:58:28,882 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 11:58:28,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 11:58:28,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 11:58:28,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 11:58:28,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 11:58:28,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 11:58:28,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 11:58:28,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 11:58:28,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 11:58:28,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 11:58:28,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 11:58:28,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 11:58:28,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 11:58:28,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 11:58:28,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 11:58:28,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 11:58:28,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 11:58:28,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 11:58:28,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 11:58:28,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 11:58:28,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 11:58:28,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 11:58:28,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 11:58:28,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 11:58:28,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 11:58:28,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 11:58:29,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 11:58:29,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 11:58:29,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 11:58:29,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 11:58:29,411 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 11:58:29,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-10-29 11:58:29,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57b7e489c/83999c1ad0664e67bc2783d61cbf4c87/FLAGcf1d6a7c8 [2020-10-29 11:58:30,153 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 11:58:30,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_security.c [2020-10-29 11:58:30,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57b7e489c/83999c1ad0664e67bc2783d61cbf4c87/FLAGcf1d6a7c8 [2020-10-29 11:58:30,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57b7e489c/83999c1ad0664e67bc2783d61cbf4c87 [2020-10-29 11:58:30,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 11:58:30,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 11:58:30,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 11:58:30,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 11:58:30,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 11:58:30,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc20e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30, skipping insertion in model container [2020-10-29 11:58:30,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 11:58:30,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 11:58:30,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 11:58:30,845 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 11:58:30,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 11:58:30,902 INFO L208 MainTranslator]: Completed translation [2020-10-29 11:58:30,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30 WrapperNode [2020-10-29 11:58:30,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 11:58:30,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 11:58:30,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 11:58:30,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 11:58:30,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:31,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:31,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:31,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 11:58:31,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 11:58:31,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 11:58:31,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 11:58:31,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 11:58:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 11:58:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 11:58:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 11:58:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 11:58:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 11:58:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 11:58:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 11:58:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 11:58:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 11:58:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 11:58:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 11:58:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 11:58:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 11:58:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 11:58:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 11:58:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 11:58:31,898 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 11:58:31,899 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-29 11:58:31,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 11:58:31 BoogieIcfgContainer [2020-10-29 11:58:31,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 11:58:31,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 11:58:31,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 11:58:31,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 11:58:31,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 11:58:30" (1/3) ... [2020-10-29 11:58:31,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e380a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 11:58:31, skipping insertion in model container [2020-10-29 11:58:31,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (2/3) ... [2020-10-29 11:58:31,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e380a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 11:58:31, skipping insertion in model container [2020-10-29 11:58:31,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 11:58:31" (3/3) ... [2020-10-29 11:58:31,910 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-10-29 11:58:31,925 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 11:58:31,930 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 11:58:31,945 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 11:58:31,974 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 11:58:31,974 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 11:58:31,974 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 11:58:31,974 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 11:58:31,975 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 11:58:31,975 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 11:58:31,975 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 11:58:31,975 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 11:58:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-29 11:58:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 11:58:32,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:32,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:32,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash -122925734, now seen corresponding path program 1 times [2020-10-29 11:58:32,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:32,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116348239] [2020-10-29 11:58:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:32,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:32,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 11:58:32,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 11:58:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:32,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 11:58:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 11:58:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:32,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:32,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:32,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:32,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:32,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 11:58:32,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:32,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:32,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:32,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116348239] [2020-10-29 11:58:32,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:32,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 11:58:32,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388435272] [2020-10-29 11:58:32,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 11:58:32,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:32,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 11:58:32,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 11:58:32,489 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-10-29 11:58:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:32,574 INFO L93 Difference]: Finished difference Result 165 states and 304 transitions. [2020-10-29 11:58:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 11:58:32,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-29 11:58:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:32,587 INFO L225 Difference]: With dead ends: 165 [2020-10-29 11:58:32,587 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 11:58:32,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 11:58:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 11:58:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-29 11:58:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 11:58:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2020-10-29 11:58:32,648 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 14 [2020-10-29 11:58:32,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:32,649 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2020-10-29 11:58:32,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 11:58:32,649 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2020-10-29 11:58:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 11:58:32,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:32,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:32,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 11:58:32,652 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:32,653 INFO L82 PathProgramCache]: Analyzing trace with hash -188356260, now seen corresponding path program 1 times [2020-10-29 11:58:32,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:32,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414149399] [2020-10-29 11:58:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:32,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:33,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 11:58:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 11:58:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-29 11:58:33,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:33,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 11:58:33,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 11:58:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 11:58:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:33,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:33,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:33,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 11:58:33,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:33,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:33,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:33,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:33,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414149399] [2020-10-29 11:58:33,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:33,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:33,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170599703] [2020-10-29 11:58:33,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:33,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:33,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:33,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:33,196 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand 4 states. [2020-10-29 11:58:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:33,837 INFO L93 Difference]: Finished difference Result 223 states and 329 transitions. [2020-10-29 11:58:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:33,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 11:58:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:33,841 INFO L225 Difference]: With dead ends: 223 [2020-10-29 11:58:33,841 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 11:58:33,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:33,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 11:58:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 119. [2020-10-29 11:58:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 11:58:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 172 transitions. [2020-10-29 11:58:33,863 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 172 transitions. Word has length 15 [2020-10-29 11:58:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:33,863 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 172 transitions. [2020-10-29 11:58:33,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 172 transitions. [2020-10-29 11:58:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 11:58:33,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:33,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:33,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 11:58:33,866 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1837568862, now seen corresponding path program 1 times [2020-10-29 11:58:33,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:33,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521155679] [2020-10-29 11:58:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:33,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 11:58:33,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 11:58:33,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:33,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 11:58:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:34,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:34,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:34,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 11:58:34,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:34,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:34,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521155679] [2020-10-29 11:58:34,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:34,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:34,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960899235] [2020-10-29 11:58:34,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:34,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:34,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:34,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:34,135 INFO L87 Difference]: Start difference. First operand 119 states and 172 transitions. Second operand 4 states. [2020-10-29 11:58:34,255 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-29 11:58:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:34,670 INFO L93 Difference]: Finished difference Result 246 states and 362 transitions. [2020-10-29 11:58:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:34,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-29 11:58:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:34,673 INFO L225 Difference]: With dead ends: 246 [2020-10-29 11:58:34,674 INFO L226 Difference]: Without dead ends: 133 [2020-10-29 11:58:34,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-29 11:58:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2020-10-29 11:58:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 11:58:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 178 transitions. [2020-10-29 11:58:34,692 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 178 transitions. Word has length 19 [2020-10-29 11:58:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:34,693 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 178 transitions. [2020-10-29 11:58:34,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 178 transitions. [2020-10-29 11:58:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 11:58:34,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:34,695 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:34,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 11:58:34,695 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:34,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1275341081, now seen corresponding path program 1 times [2020-10-29 11:58:34,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:34,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341506070] [2020-10-29 11:58:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 11:58:34,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 11:58:34,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:34,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 11:58:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 11:58:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:34,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:34,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:34,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 11:58:34,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:34,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:34,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:34,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341506070] [2020-10-29 11:58:34,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:34,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:34,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990990797] [2020-10-29 11:58:34,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:34,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:34,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:34,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:34,909 INFO L87 Difference]: Start difference. First operand 125 states and 178 transitions. Second operand 4 states. [2020-10-29 11:58:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:35,361 INFO L93 Difference]: Finished difference Result 228 states and 329 transitions. [2020-10-29 11:58:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:35,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-29 11:58:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:35,363 INFO L225 Difference]: With dead ends: 228 [2020-10-29 11:58:35,363 INFO L226 Difference]: Without dead ends: 109 [2020-10-29 11:58:35,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-29 11:58:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2020-10-29 11:58:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-29 11:58:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 152 transitions. [2020-10-29 11:58:35,378 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 152 transitions. Word has length 24 [2020-10-29 11:58:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:35,378 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 152 transitions. [2020-10-29 11:58:35,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 152 transitions. [2020-10-29 11:58:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 11:58:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:35,380 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:35,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 11:58:35,381 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -645502930, now seen corresponding path program 1 times [2020-10-29 11:58:35,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:35,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178806975] [2020-10-29 11:58:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 11:58:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 11:58:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 11:58:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 11:58:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:35,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 11:58:35,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 11:58:35,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178806975] [2020-10-29 11:58:35,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:35,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:35,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343689130] [2020-10-29 11:58:35,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:35,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:35,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:35,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:35,611 INFO L87 Difference]: Start difference. First operand 108 states and 152 transitions. Second operand 4 states. [2020-10-29 11:58:35,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:35,899 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2020-10-29 11:58:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:35,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-29 11:58:35,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:35,901 INFO L225 Difference]: With dead ends: 183 [2020-10-29 11:58:35,901 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 11:58:35,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:35,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 11:58:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-29 11:58:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 11:58:35,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 111 transitions. [2020-10-29 11:58:35,922 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 111 transitions. Word has length 27 [2020-10-29 11:58:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:35,922 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 111 transitions. [2020-10-29 11:58:35,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 111 transitions. [2020-10-29 11:58:35,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 11:58:35,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:35,930 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:35,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 11:58:35,930 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:35,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:35,931 INFO L82 PathProgramCache]: Analyzing trace with hash -311961296, now seen corresponding path program 1 times [2020-10-29 11:58:35,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:35,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817778277] [2020-10-29 11:58:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 11:58:35,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 11:58:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 11:58:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 11:58:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:36,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:36,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:36,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:36,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 11:58:36,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:36,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:36,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:36,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 11:58:36,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817778277] [2020-10-29 11:58:36,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:36,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:36,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538889285] [2020-10-29 11:58:36,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:36,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:36,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:36,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:36,103 INFO L87 Difference]: Start difference. First operand 81 states and 111 transitions. Second operand 4 states. [2020-10-29 11:58:36,309 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-29 11:58:36,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:36,656 INFO L93 Difference]: Finished difference Result 169 states and 244 transitions. [2020-10-29 11:58:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:36,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 11:58:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:36,659 INFO L225 Difference]: With dead ends: 169 [2020-10-29 11:58:36,659 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 11:58:36,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 11:58:36,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 110. [2020-10-29 11:58:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 11:58:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 153 transitions. [2020-10-29 11:58:36,670 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 153 transitions. Word has length 31 [2020-10-29 11:58:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:36,671 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 153 transitions. [2020-10-29 11:58:36,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 153 transitions. [2020-10-29 11:58:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 11:58:36,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:36,672 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:36,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 11:58:36,673 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:36,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:36,673 INFO L82 PathProgramCache]: Analyzing trace with hash 235222489, now seen corresponding path program 1 times [2020-10-29 11:58:36,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:36,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800935888] [2020-10-29 11:58:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:36,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:36,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 11:58:36,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 11:58:36,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:36,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 11:58:36,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 11:58:36,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:36,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:36,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 11:58:36,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:36,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 11:58:36,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800935888] [2020-10-29 11:58:36,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:36,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:36,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386459809] [2020-10-29 11:58:36,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:36,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:36,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:36,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:36,857 INFO L87 Difference]: Start difference. First operand 110 states and 153 transitions. Second operand 4 states. [2020-10-29 11:58:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:37,211 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2020-10-29 11:58:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:37,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-29 11:58:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:37,217 INFO L225 Difference]: With dead ends: 178 [2020-10-29 11:58:37,217 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 11:58:37,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:37,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 11:58:37,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-29 11:58:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 11:58:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2020-10-29 11:58:37,241 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 32 [2020-10-29 11:58:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:37,242 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2020-10-29 11:58:37,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2020-10-29 11:58:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 11:58:37,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:37,246 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:37,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 11:58:37,246 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash 167233998, now seen corresponding path program 1 times [2020-10-29 11:58:37,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:37,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650584647] [2020-10-29 11:58:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:37,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 11:58:37,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 11:58:37,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:37,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 11:58:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:37,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:37,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 11:58:37,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:37,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 11:58:37,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650584647] [2020-10-29 11:58:37,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:37,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:37,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369735521] [2020-10-29 11:58:37,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:37,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:37,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:37,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:37,482 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand 4 states. [2020-10-29 11:58:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:37,778 INFO L93 Difference]: Finished difference Result 153 states and 203 transitions. [2020-10-29 11:58:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:37,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-29 11:58:37,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:37,781 INFO L225 Difference]: With dead ends: 153 [2020-10-29 11:58:37,781 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 11:58:37,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 11:58:37,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-29 11:58:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 11:58:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-29 11:58:37,794 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 32 [2020-10-29 11:58:37,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:37,794 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-29 11:58:37,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-29 11:58:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 11:58:37,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:37,801 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:37,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 11:58:37,802 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:37,802 INFO L82 PathProgramCache]: Analyzing trace with hash -49937851, now seen corresponding path program 1 times [2020-10-29 11:58:37,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:37,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081896891] [2020-10-29 11:58:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:37,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 11:58:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:37,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 11:58:37,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:37,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 11:58:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 11:58:37,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 11:58:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:37,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:37,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:37,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:37,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 11:58:38,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 11:58:38,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081896891] [2020-10-29 11:58:38,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:38,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:38,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699349166] [2020-10-29 11:58:38,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:38,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:38,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:38,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:38,008 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 4 states. [2020-10-29 11:58:38,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:38,372 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2020-10-29 11:58:38,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:38,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-29 11:58:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:38,391 INFO L225 Difference]: With dead ends: 88 [2020-10-29 11:58:38,391 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 11:58:38,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 11:58:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-29 11:58:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 11:58:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2020-10-29 11:58:38,407 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 33 [2020-10-29 11:58:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:38,409 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2020-10-29 11:58:38,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2020-10-29 11:58:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 11:58:38,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:38,417 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:38,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 11:58:38,417 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1193122916, now seen corresponding path program 1 times [2020-10-29 11:58:38,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:38,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255014544] [2020-10-29 11:58:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:38,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 11:58:38,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 11:58:38,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:38,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 11:58:38,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 11:58:38,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:38,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:38,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:38,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 11:58:38,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 11:58:38,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255014544] [2020-10-29 11:58:38,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:38,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 11:58:38,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424918571] [2020-10-29 11:58:38,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 11:58:38,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:38,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 11:58:38,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 11:58:38,657 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand 4 states. [2020-10-29 11:58:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:38,972 INFO L93 Difference]: Finished difference Result 126 states and 164 transitions. [2020-10-29 11:58:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 11:58:38,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-29 11:58:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:38,977 INFO L225 Difference]: With dead ends: 126 [2020-10-29 11:58:38,977 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 11:58:38,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 11:58:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 11:58:38,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 11:58:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 11:58:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 11:58:38,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-29 11:58:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:38,979 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 11:58:38,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 11:58:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 11:58:38,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 11:58:38,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 11:58:38,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 11:58:39,508 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 18 [2020-10-29 11:58:40,031 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 18 [2020-10-29 11:58:40,038 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-29 11:58:40,039 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-29 11:58:40,039 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-29 11:58:40,039 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-29 11:58:40,039 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 11:58:40,040 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= |old(#length)| |#length|) (= ~m_sign~0 |old(~m_sign~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~m_verify~0 |old(~m_verify~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-29 11:58:40,040 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 11:58:40,040 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 11:58:40,040 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 11:58:40,040 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 11:58:40,040 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 11:58:40,040 INFO L274 CegarLoopResult]: For program point L250(lines 250 265) no Hoare annotation was computed. [2020-10-29 11:58:40,040 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 392) no Hoare annotation was computed. [2020-10-29 11:58:40,041 INFO L274 CegarLoopResult]: For program point L118(lines 118 133) no Hoare annotation was computed. [2020-10-29 11:58:40,041 INFO L274 CegarLoopResult]: For program point L52(lines 52 63) no Hoare annotation was computed. [2020-10-29 11:58:40,041 INFO L274 CegarLoopResult]: For program point L366(lines 366 381) no Hoare annotation was computed. [2020-10-29 11:58:40,041 INFO L274 CegarLoopResult]: For program point L234(lines 234 249) no Hoare annotation was computed. [2020-10-29 11:58:40,041 INFO L274 CegarLoopResult]: For program point L168(lines 168 179) no Hoare annotation was computed. [2020-10-29 11:58:40,041 INFO L274 CegarLoopResult]: For program point L102(lines 102 117) no Hoare annotation was computed. [2020-10-29 11:58:40,041 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-29 11:58:40,041 INFO L270 CegarLoopResult]: At program point L383(lines 24 387) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-10-29 11:58:40,041 INFO L274 CegarLoopResult]: For program point L350(lines 350 365) no Hoare annotation was computed. [2020-10-29 11:58:40,042 INFO L274 CegarLoopResult]: For program point L218(lines 218 233) no Hoare annotation was computed. [2020-10-29 11:58:40,042 INFO L274 CegarLoopResult]: For program point L185(lines 185 284) no Hoare annotation was computed. [2020-10-29 11:58:40,042 INFO L274 CegarLoopResult]: For program point L152(lines 152 163) no Hoare annotation was computed. [2020-10-29 11:58:40,042 INFO L274 CegarLoopResult]: For program point L334(lines 334 349) no Hoare annotation was computed. [2020-10-29 11:58:40,042 INFO L274 CegarLoopResult]: For program point L268(lines 268 279) no Hoare annotation was computed. [2020-10-29 11:58:40,042 INFO L274 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-10-29 11:58:40,042 INFO L274 CegarLoopResult]: For program point L136(lines 136 147) no Hoare annotation was computed. [2020-10-29 11:58:40,042 INFO L274 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-10-29 11:58:40,043 INFO L274 CegarLoopResult]: For program point L285(lines 285 384) no Hoare annotation was computed. [2020-10-29 11:58:40,043 INFO L274 CegarLoopResult]: For program point L252(lines 252 263) no Hoare annotation was computed. [2020-10-29 11:58:40,043 INFO L274 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-10-29 11:58:40,043 INFO L274 CegarLoopResult]: For program point L120(lines 120 131) no Hoare annotation was computed. [2020-10-29 11:58:40,043 INFO L274 CegarLoopResult]: For program point L368(lines 368 379) no Hoare annotation was computed. [2020-10-29 11:58:40,043 INFO L274 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-10-29 11:58:40,043 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 392) no Hoare annotation was computed. [2020-10-29 11:58:40,044 INFO L274 CegarLoopResult]: For program point L236(lines 236 247) no Hoare annotation was computed. [2020-10-29 11:58:40,044 INFO L274 CegarLoopResult]: For program point L104(lines 104 115) no Hoare annotation was computed. [2020-10-29 11:58:40,044 INFO L274 CegarLoopResult]: For program point L352(lines 352 363) no Hoare annotation was computed. [2020-10-29 11:58:40,044 INFO L274 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-10-29 11:58:40,044 INFO L274 CegarLoopResult]: For program point L220(lines 220 231) no Hoare annotation was computed. [2020-10-29 11:58:40,044 INFO L274 CegarLoopResult]: For program point L88(lines 88 90) no Hoare annotation was computed. [2020-10-29 11:58:40,044 INFO L274 CegarLoopResult]: For program point L336(lines 336 347) no Hoare annotation was computed. [2020-10-29 11:58:40,044 INFO L274 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-10-29 11:58:40,045 INFO L274 CegarLoopResult]: For program point L72(lines 72 74) no Hoare annotation was computed. [2020-10-29 11:58:40,045 INFO L274 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-10-29 11:58:40,045 INFO L274 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-10-29 11:58:40,045 INFO L274 CegarLoopResult]: For program point L56(lines 56 58) no Hoare annotation was computed. [2020-10-29 11:58:40,045 INFO L274 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-10-29 11:58:40,045 INFO L274 CegarLoopResult]: For program point L172(lines 172 174) no Hoare annotation was computed. [2020-10-29 11:58:40,045 INFO L274 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-10-29 11:58:40,046 INFO L274 CegarLoopResult]: For program point L156(lines 156 158) no Hoare annotation was computed. [2020-10-29 11:58:40,046 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 387) the Hoare annotation is: (or (<= main_~q~0 0) (and (<= 3 main_~q~0) (= 2 main_~this_state~0) (<= main_~q~0 3)) (and (<= main_~this_state~0 0) (<= main_~q~0 2)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-10-29 11:58:40,046 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2020-10-29 11:58:40,046 INFO L274 CegarLoopResult]: For program point L272(lines 272 274) no Hoare annotation was computed. [2020-10-29 11:58:40,046 INFO L274 CegarLoopResult]: For program point L140(lines 140 142) no Hoare annotation was computed. [2020-10-29 11:58:40,046 INFO L274 CegarLoopResult]: For program point L256(lines 256 258) no Hoare annotation was computed. [2020-10-29 11:58:40,047 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-29 11:58:40,047 INFO L274 CegarLoopResult]: For program point L372(lines 372 374) no Hoare annotation was computed. [2020-10-29 11:58:40,047 INFO L274 CegarLoopResult]: For program point L240(lines 240 242) no Hoare annotation was computed. [2020-10-29 11:58:40,047 INFO L274 CegarLoopResult]: For program point L108(lines 108 110) no Hoare annotation was computed. [2020-10-29 11:58:40,047 INFO L274 CegarLoopResult]: For program point L356(lines 356 358) no Hoare annotation was computed. [2020-10-29 11:58:40,047 INFO L274 CegarLoopResult]: For program point L224(lines 224 226) no Hoare annotation was computed. [2020-10-29 11:58:40,047 INFO L270 CegarLoopResult]: At program point L373(lines 15 392) the Hoare annotation is: false [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L340(lines 340 342) no Hoare annotation was computed. [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L391(line 391) no Hoare annotation was computed. [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L29(lines 29 48) no Hoare annotation was computed. [2020-10-29 11:58:40,048 INFO L274 CegarLoopResult]: For program point L30(lines 30 45) no Hoare annotation was computed. [2020-10-29 11:58:40,049 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 392) the Hoare annotation is: true [2020-10-29 11:58:40,049 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-10-29 11:58:40,049 INFO L274 CegarLoopResult]: For program point L82(lines 82 97) no Hoare annotation was computed. [2020-10-29 11:58:40,049 INFO L274 CegarLoopResult]: For program point L49(lines 49 100) no Hoare annotation was computed. [2020-10-29 11:58:40,049 INFO L274 CegarLoopResult]: For program point L66(lines 66 81) no Hoare annotation was computed. [2020-10-29 11:58:40,049 INFO L274 CegarLoopResult]: For program point L50(lines 50 65) no Hoare annotation was computed. [2020-10-29 11:58:40,049 INFO L274 CegarLoopResult]: For program point L166(lines 166 181) no Hoare annotation was computed. [2020-10-29 11:58:40,049 INFO L274 CegarLoopResult]: For program point L150(lines 150 165) no Hoare annotation was computed. [2020-10-29 11:58:40,050 INFO L274 CegarLoopResult]: For program point L84(lines 84 95) no Hoare annotation was computed. [2020-10-29 11:58:40,050 INFO L274 CegarLoopResult]: For program point L266(lines 266 281) no Hoare annotation was computed. [2020-10-29 11:58:40,050 INFO L274 CegarLoopResult]: For program point L134(lines 134 149) no Hoare annotation was computed. [2020-10-29 11:58:40,050 INFO L274 CegarLoopResult]: For program point L101(lines 101 184) no Hoare annotation was computed. [2020-10-29 11:58:40,050 INFO L274 CegarLoopResult]: For program point L68(lines 68 79) no Hoare annotation was computed. [2020-10-29 11:58:40,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 11:58:40 BoogieIcfgContainer [2020-10-29 11:58:40,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 11:58:40,078 INFO L168 Benchmark]: Toolchain (without parser) took 9563.56 ms. Allocated memory was 160.4 MB in the beginning and 273.7 MB in the end (delta: 113.2 MB). Free memory was 136.1 MB in the beginning and 242.0 MB in the end (delta: -105.9 MB). Peak memory consumption was 126.6 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:40,079 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 160.4 MB. Free memory is still 133.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 11:58:40,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.10 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 123.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:40,080 INFO L168 Benchmark]: Boogie Preprocessor took 111.12 ms. Allocated memory is still 160.4 MB. Free memory was 123.6 MB in the beginning and 121.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:40,081 INFO L168 Benchmark]: RCFGBuilder took 877.57 ms. Allocated memory is still 160.4 MB. Free memory was 121.6 MB in the beginning and 126.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:40,082 INFO L168 Benchmark]: TraceAbstraction took 8173.22 ms. Allocated memory was 160.4 MB in the beginning and 273.7 MB in the end (delta: 113.2 MB). Free memory was 125.6 MB in the beginning and 242.0 MB in the end (delta: -116.4 MB). Peak memory consumption was 115.9 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:40,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 160.4 MB. Free memory is still 133.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 385.10 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 123.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.12 ms. Allocated memory is still 160.4 MB. Free memory was 123.6 MB in the beginning and 121.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 877.57 ms. Allocated memory is still 160.4 MB. Free memory was 121.6 MB in the beginning and 126.2 MB in the end (delta: -4.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8173.22 ms. Allocated memory was 160.4 MB in the beginning and 273.7 MB in the end (delta: 113.2 MB). Free memory was 125.6 MB in the beginning and 242.0 MB in the end (delta: -116.4 MB). Peak memory consumption was 115.9 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: 24]: Loop Invariant Derived loop invariant: ((q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((q <= 0 || ((3 <= q && 2 == this_state) && q <= 3)) || (this_state <= 0 && q <= 2)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 954 SDtfs, 1398 SDslu, 66 SDs, 0 SdLazy, 678 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=3, 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, 10 MinimizatonAttempts, 35 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 25 NumberOfFragments, 110 HoareAnnotationTreeSize, 17 FomulaSimplifications, 210 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 464 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 22453 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 49/49 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...