/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:52:35,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:52:35,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:52:35,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:52:35,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:52:35,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:52:35,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:52:35,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:52:35,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:52:35,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:52:35,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:52:35,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:52:35,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:52:35,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:52:35,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:52:35,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:52:35,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:52:35,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:52:35,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:52:35,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:52:35,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:52:35,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:52:35,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:52:35,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:52:35,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:52:35,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:52:35,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:52:35,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:52:35,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:52:35,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:52:35,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:52:35,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:52:35,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:52:35,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:52:35,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:52:35,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:52:35,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:52:35,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:52:35,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:52:35,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:52:35,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:52:35,869 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 [2020-09-24 21:52:35,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:52:35,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:52:35,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:52:35,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:52:35,923 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:52:35,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:52:35,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:52:35,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:52:35,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:52:35,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:52:35,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:52:35,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:52:35,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:52:35,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:52:35,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:52:35,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:52:35,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:52:35,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:52:35,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:52:35,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:52:35,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:52:35,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:52:35,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:52:35,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:52:35,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:52:35,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:52:35,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:52:35,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:52:35,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:52:35,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:52:36,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:52:36,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:52:36,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:52:36,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:52:36,440 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:52:36,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-24 21:52:36,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/031cc85e0/6c9c14b46b254afd820f0e3f252679c4/FLAG2252d734f [2020-09-24 21:52:37,061 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:52:37,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-09-24 21:52:37,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/031cc85e0/6c9c14b46b254afd820f0e3f252679c4/FLAG2252d734f [2020-09-24 21:52:37,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/031cc85e0/6c9c14b46b254afd820f0e3f252679c4 [2020-09-24 21:52:37,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:52:37,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:52:37,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:52:37,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:52:37,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:52:37,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37, skipping insertion in model container [2020-09-24 21:52:37,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:52:37,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:52:37,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:52:37,691 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:52:37,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:52:37,726 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:52:37,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37 WrapperNode [2020-09-24 21:52:37,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:52:37,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:52:37,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:52:37,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:52:37,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (1/1) ... [2020-09-24 21:52:37,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:52:37,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:52:37,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:52:37,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:52:37,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:52:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:52:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:52:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:52:37,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:52:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:52:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:52:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:52:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:52:37,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:52:38,177 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:52:38,177 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:52:38,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:52:38 BoogieIcfgContainer [2020-09-24 21:52:38,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:52:38,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:52:38,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:52:38,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:52:38,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:52:37" (1/3) ... [2020-09-24 21:52:38,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b33df51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:52:38, skipping insertion in model container [2020-09-24 21:52:38,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:52:37" (2/3) ... [2020-09-24 21:52:38,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b33df51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:52:38, skipping insertion in model container [2020-09-24 21:52:38,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:52:38" (3/3) ... [2020-09-24 21:52:38,194 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-09-24 21:52:38,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:52:38,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:52:38,240 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:52:38,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:52:38,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:52:38,297 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:52:38,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:52:38,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:52:38,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:52:38,298 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:52:38,298 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:52:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-09-24 21:52:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 21:52:38,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:38,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:38,333 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:38,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1562147583, now seen corresponding path program 1 times [2020-09-24 21:52:38,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:38,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940196306] [2020-09-24 21:52:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:38,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:38,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:52:38,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-24 21:52:38,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:52:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 21:52:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:52:38,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:38,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:38,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:38,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:52:38,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:38,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:38,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:38,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940196306] [2020-09-24 21:52:38,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:52:38,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 21:52:38,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239337690] [2020-09-24 21:52:38,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 21:52:38,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:38,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 21:52:38,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:52:38,841 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-09-24 21:52:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:38,910 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2020-09-24 21:52:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 21:52:38,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-24 21:52:38,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:38,924 INFO L225 Difference]: With dead ends: 105 [2020-09-24 21:52:38,925 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 21:52:38,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 21:52:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 21:52:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2020-09-24 21:52:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 21:52:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 21:52:38,981 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2020-09-24 21:52:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:38,981 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 21:52:38,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 21:52:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 21:52:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 21:52:38,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:38,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:38,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:52:38,984 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:38,985 INFO L82 PathProgramCache]: Analyzing trace with hash 42061886, now seen corresponding path program 1 times [2020-09-24 21:52:38,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:38,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109139805] [2020-09-24 21:52:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:39,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:39,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:39,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:52:39,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:52:39,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-24 21:52:39,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:52:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:52:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:52:39,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:39,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:39,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:39,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:39,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:39,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:39,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:39,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109139805] [2020-09-24 21:52:39,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:39,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 21:52:39,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115630068] [2020-09-24 21:52:39,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:52:39,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:39,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:52:39,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:52:39,533 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-24 21:52:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:39,605 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2020-09-24 21:52:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:52:39,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 21:52:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:39,608 INFO L225 Difference]: With dead ends: 97 [2020-09-24 21:52:39,608 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 21:52:39,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:52:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 21:52:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2020-09-24 21:52:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 21:52:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-09-24 21:52:39,619 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 27 [2020-09-24 21:52:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:39,619 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-09-24 21:52:39,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:52:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-09-24 21:52:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 21:52:39,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:39,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:39,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:52:39,638 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:39,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2023869189, now seen corresponding path program 2 times [2020-09-24 21:52:39,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:39,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235456135] [2020-09-24 21:52:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:39,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:39,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:40,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 21:52:40,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:52:40,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-24 21:52:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:52:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:52:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:40,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:40,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:40,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:40,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:52:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:40,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235456135] [2020-09-24 21:52:40,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:40,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:52:40,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630109732] [2020-09-24 21:52:40,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:52:40,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:40,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:52:40,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:52:40,144 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 7 states. [2020-09-24 21:52:40,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:40,275 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-09-24 21:52:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:52:40,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-09-24 21:52:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:40,279 INFO L225 Difference]: With dead ends: 105 [2020-09-24 21:52:40,279 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 21:52:40,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:52:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 21:52:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-09-24 21:52:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 21:52:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-24 21:52:40,295 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 31 [2020-09-24 21:52:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:40,296 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-24 21:52:40,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:52:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-24 21:52:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:52:40,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:40,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:40,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:52:40,300 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:40,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:40,300 INFO L82 PathProgramCache]: Analyzing trace with hash -909118664, now seen corresponding path program 3 times [2020-09-24 21:52:40,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:40,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484793077] [2020-09-24 21:52:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:40,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:41,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:41,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:52:41,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:52:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-09-24 21:52:41,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:52:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:41,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:52:41,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:41,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:41,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:41,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:41,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484793077] [2020-09-24 21:52:41,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:41,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:52:41,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042952569] [2020-09-24 21:52:41,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:52:41,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:41,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:52:41,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:52:41,345 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 9 states. [2020-09-24 21:52:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:41,506 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-09-24 21:52:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:52:41,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 21:52:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:41,508 INFO L225 Difference]: With dead ends: 113 [2020-09-24 21:52:41,509 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 21:52:41,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:52:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 21:52:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-09-24 21:52:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 21:52:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-24 21:52:41,517 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2020-09-24 21:52:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:41,518 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-24 21:52:41,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:52:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-24 21:52:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 21:52:41,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:41,519 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:41,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:52:41,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:41,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:41,520 INFO L82 PathProgramCache]: Analyzing trace with hash -460436747, now seen corresponding path program 4 times [2020-09-24 21:52:41,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:41,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977128187] [2020-09-24 21:52:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:41,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:42,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:42,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:52:42,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:52:42,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-09-24 21:52:42,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:42,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:52:42,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:42,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:52:42,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:42,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:42,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:42,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:42,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:42,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977128187] [2020-09-24 21:52:42,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:42,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:52:42,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923185614] [2020-09-24 21:52:42,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:52:42,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:42,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:52:42,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:52:42,602 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-24 21:52:42,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:42,839 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-09-24 21:52:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:52:42,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-09-24 21:52:42,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:42,841 INFO L225 Difference]: With dead ends: 121 [2020-09-24 21:52:42,841 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 21:52:42,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:52:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 21:52:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2020-09-24 21:52:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 21:52:42,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-09-24 21:52:42,849 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2020-09-24 21:52:42,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:42,850 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-09-24 21:52:42,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:52:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-09-24 21:52:42,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:52:42,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:42,852 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:42,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:52:42,852 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:42,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:42,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1152416818, now seen corresponding path program 5 times [2020-09-24 21:52:42,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:42,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167756314] [2020-09-24 21:52:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:44,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:44,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 21:52:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:52:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1463 [2020-09-24 21:52:44,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:52:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 21:52:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:44,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:44,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:44,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:44,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:44,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167756314] [2020-09-24 21:52:44,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:44,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:52:44,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523855967] [2020-09-24 21:52:44,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:52:44,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:44,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:52:44,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:52:44,532 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 13 states. [2020-09-24 21:52:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:44,929 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-09-24 21:52:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:52:44,930 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-09-24 21:52:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:44,931 INFO L225 Difference]: With dead ends: 129 [2020-09-24 21:52:44,932 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 21:52:44,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:52:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 21:52:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2020-09-24 21:52:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 21:52:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-24 21:52:44,942 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 43 [2020-09-24 21:52:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:44,943 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-24 21:52:44,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:52:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-24 21:52:44,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 21:52:44,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:44,945 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:44,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:52:44,945 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:44,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:44,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2041431791, now seen corresponding path program 6 times [2020-09-24 21:52:44,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:44,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888748361] [2020-09-24 21:52:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:45,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:46,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:46,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:52:46,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:52:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1759 [2020-09-24 21:52:46,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:52:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:52:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:46,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:46,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:46,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:46,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:46,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:52:46,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:46,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:47,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888748361] [2020-09-24 21:52:47,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:47,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:52:47,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777822795] [2020-09-24 21:52:47,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:52:47,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:47,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:52:47,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:52:47,006 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 15 states. [2020-09-24 21:52:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:47,423 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2020-09-24 21:52:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:52:47,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-24 21:52:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:47,425 INFO L225 Difference]: With dead ends: 137 [2020-09-24 21:52:47,425 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 21:52:47,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:52:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 21:52:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2020-09-24 21:52:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 21:52:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-09-24 21:52:47,441 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 47 [2020-09-24 21:52:47,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:47,441 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-09-24 21:52:47,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:52:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-09-24 21:52:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:52:47,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:47,446 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:47,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:52:47,447 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash 90008364, now seen corresponding path program 7 times [2020-09-24 21:52:47,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:47,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905789304] [2020-09-24 21:52:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:49,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 21:52:49,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:52:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-09-24 21:52:49,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:52:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:52:49,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:49,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:49,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:49,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:49,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:49,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:49,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:49,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905789304] [2020-09-24 21:52:49,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:49,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:52:49,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483794852] [2020-09-24 21:52:49,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:52:49,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:49,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:52:49,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:52:49,352 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 17 states. [2020-09-24 21:52:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:49,907 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2020-09-24 21:52:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:52:49,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-09-24 21:52:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:49,909 INFO L225 Difference]: With dead ends: 145 [2020-09-24 21:52:49,909 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 21:52:49,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:52:49,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 21:52:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2020-09-24 21:52:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 21:52:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 21:52:49,917 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 51 [2020-09-24 21:52:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:49,917 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 21:52:49,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:52:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 21:52:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 21:52:49,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:49,919 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:49,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:52:49,919 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:49,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:49,920 INFO L82 PathProgramCache]: Analyzing trace with hash 737585385, now seen corresponding path program 8 times [2020-09-24 21:52:49,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:49,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374741351] [2020-09-24 21:52:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:49,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:50,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:51,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:51,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 21:52:51,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:52:51,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-09-24 21:52:51,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:52:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 21:52:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:51,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:51,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:51,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:51,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:51,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:51,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:51,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374741351] [2020-09-24 21:52:51,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:51,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:52:51,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144680749] [2020-09-24 21:52:51,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:52:51,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:52:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:52:51,827 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 19 states. [2020-09-24 21:52:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:52,411 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-09-24 21:52:52,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 21:52:52,412 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-09-24 21:52:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:52,413 INFO L225 Difference]: With dead ends: 153 [2020-09-24 21:52:52,413 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 21:52:52,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 21:52:52,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 21:52:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-09-24 21:52:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 21:52:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-09-24 21:52:52,421 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 55 [2020-09-24 21:52:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:52,422 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-09-24 21:52:52,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:52:52,422 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-09-24 21:52:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 21:52:52,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:52,423 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:52,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:52:52,424 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:52,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1005535194, now seen corresponding path program 9 times [2020-09-24 21:52:52,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:52,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590104109] [2020-09-24 21:52:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:52,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:54,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:54,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:54,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:52:54,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:52:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2459 [2020-09-24 21:52:54,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:52:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 21:52:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:55,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:55,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:55,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:55,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:55,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:55,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:55,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590104109] [2020-09-24 21:52:55,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:55,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 21:52:55,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431184129] [2020-09-24 21:52:55,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 21:52:55,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:55,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 21:52:55,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:52:55,330 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 21 states. [2020-09-24 21:52:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:56,187 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2020-09-24 21:52:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 21:52:56,188 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-09-24 21:52:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:56,189 INFO L225 Difference]: With dead ends: 161 [2020-09-24 21:52:56,189 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 21:52:56,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 21:52:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 21:52:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 78. [2020-09-24 21:52:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 21:52:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-09-24 21:52:56,201 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 59 [2020-09-24 21:52:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:56,204 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-09-24 21:52:56,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 21:52:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-09-24 21:52:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 21:52:56,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:56,208 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:56,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:52:56,208 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:56,209 INFO L82 PathProgramCache]: Analyzing trace with hash 111341795, now seen corresponding path program 10 times [2020-09-24 21:52:56,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:56,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451875488] [2020-09-24 21:52:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:57,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:58,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:58,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 21:52:58,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:52:58,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2418 [2020-09-24 21:52:58,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:52:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 21:52:58,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 21:52:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:59,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:59,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:59,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:52:59,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:52:59,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:59,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:59,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451875488] [2020-09-24 21:52:59,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:59,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 21:52:59,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033430858] [2020-09-24 21:52:59,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 21:52:59,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:59,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 21:52:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:52:59,316 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 25 states. [2020-09-24 21:53:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:53:00,471 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2020-09-24 21:53:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 21:53:00,472 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2020-09-24 21:53:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:53:00,473 INFO L225 Difference]: With dead ends: 161 [2020-09-24 21:53:00,473 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:53:00,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 21:53:00,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:53:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:53:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:53:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:53:00,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-24 21:53:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:53:00,476 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:53:00,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 21:53:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:53:00,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:53:00,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:53:00,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:53:00,722 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-09-24 21:53:00,728 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 21:53:00,728 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:53:00,728 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:53:00,728 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:53:00,728 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:53:00,728 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:53:00,729 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-09-24 21:53:00,729 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 21:53:00,730 INFO L268 CegarLoopResult]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2020-09-24 21:53:00,730 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 21:53:00,730 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-24 21:53:00,730 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-24 21:53:00,730 INFO L264 CegarLoopResult]: At program point L19-6(lines 19 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-24 21:53:00,731 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 21:53:00,731 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-24 21:53:00,731 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 21:53:00,731 INFO L268 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2020-09-24 21:53:00,732 INFO L264 CegarLoopResult]: At program point L20-5(lines 20 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-24 21:53:00,733 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 21:53:00,733 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-24 21:53:00,733 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 21:53:00,733 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-24 21:53:00,733 INFO L268 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-09-24 21:53:00,733 INFO L264 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: (or (and (<= main_~v~0 9) (<= 9 main_~v~0)) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) (and (<= main_~v~0 8) (< 0 (+ (div main_~v~0 4294967296) 1)))) [2020-09-24 21:53:00,734 INFO L264 CegarLoopResult]: At program point L21-7(line 21) the Hoare annotation is: (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0)) [2020-09-24 21:53:00,734 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 23) no Hoare annotation was computed. [2020-09-24 21:53:00,734 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 21:53:00,734 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-24 21:53:00,734 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-09-24 21:53:00,734 INFO L268 CegarLoopResult]: For program point L17-5(line 17) no Hoare annotation was computed. [2020-09-24 21:53:00,735 INFO L264 CegarLoopResult]: At program point L17-6(lines 17 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-24 21:53:00,735 INFO L268 CegarLoopResult]: For program point L17-7(lines 17 23) no Hoare annotation was computed. [2020-09-24 21:53:00,735 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-09-24 21:53:00,735 INFO L268 CegarLoopResult]: For program point L22(lines 20 23) no Hoare annotation was computed. [2020-09-24 21:53:00,735 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 21:53:00,735 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 23) no Hoare annotation was computed. [2020-09-24 21:53:00,735 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 21:53:00,736 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 21:53:00,736 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 21:53:00,736 INFO L264 CegarLoopResult]: At program point L18-6(lines 18 23) the Hoare annotation is: (or (= main_~v~0 0) (and (<= (let ((.cse0 (div main_~v~0 4))) (+ (* 1073741824 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) .cse0)) 2) (<= 10 main_~v~0))) [2020-09-24 21:53:00,736 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-24 21:53:00,736 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-24 21:53:00,736 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 21:53:00,736 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-24 21:53:00,737 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-24 21:53:00,737 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-24 21:53:00,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:53:00 BoogieIcfgContainer [2020-09-24 21:53:00,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:53:00,782 INFO L168 Benchmark]: Toolchain (without parser) took 23361.66 ms. Allocated memory was 138.9 MB in the beginning and 415.2 MB in the end (delta: 276.3 MB). Free memory was 101.9 MB in the beginning and 346.9 MB in the end (delta: -245.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:00,784 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:53:00,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.03 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 91.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:00,789 INFO L168 Benchmark]: Boogie Preprocessor took 117.36 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 91.8 MB in the beginning and 178.4 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:00,790 INFO L168 Benchmark]: RCFGBuilder took 338.28 ms. Allocated memory is still 199.8 MB. Free memory was 178.4 MB in the beginning and 163.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:00,793 INFO L168 Benchmark]: TraceAbstraction took 22594.74 ms. Allocated memory was 199.8 MB in the beginning and 415.2 MB in the end (delta: 215.5 MB). Free memory was 162.5 MB in the beginning and 346.9 MB in the end (delta: -184.4 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:53:00,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.03 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 91.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.36 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 91.8 MB in the beginning and 178.4 MB in the end (delta: -86.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.28 ms. Allocated memory is still 199.8 MB. Free memory was 178.4 MB in the beginning and 163.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22594.74 ms. Allocated memory was 199.8 MB in the beginning and 415.2 MB in the end (delta: 215.5 MB). Free memory was 162.5 MB in the beginning and 346.9 MB in the end (delta: -184.4 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 17]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((v <= 9 && 9 <= v) || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v)) || (v <= 8 && 0 < v / 4294967296 + 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v == 0 || (1073741824 * ((v + v / 4 * -4) / 4294967296) + v / 4 <= 2 && 10 <= v) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.1s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 527 SDtfs, 434 SDslu, 5358 SDs, 0 SdLazy, 2963 SolverSat, 124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=10, 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, 11 MinimizatonAttempts, 190 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 22 PreInvPairs, 42 NumberOfFragments, 166 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 95192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/715 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...