/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=HIGHLEXORDER --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/sum01_bug02_sum01_bug02_base.case.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:55:37,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:55:37,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:55:37,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:55:37,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:55:37,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:55:37,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:55:37,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:55:37,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:55:37,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:55:37,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:55:37,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:55:37,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:55:37,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:55:37,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:55:37,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:55:37,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:55:37,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:55:37,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:55:37,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:55:37,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:55:37,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:55:37,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:55:37,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:55:37,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:55:37,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:55:37,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:55:37,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:55:37,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:55:37,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 22:55:37,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:55:37,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:55:37,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:55:37,684 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 22:55:37,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:55:37,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:55:37,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:55:37,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:55:37,729 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:55:37,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:55:37,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:55:37,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:55:37,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:55:37,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:55:37,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:55:37,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:55:37,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:55:37,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:55:37,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:55:37,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:55:37,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:55:37,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:55:37,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:55:37,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:55:37,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:55:37,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:55:37,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:55:37,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:55:37,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:55:37,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:55:37,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:55:37,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:55:37,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:55:37,737 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:55:38,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:55:38,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:55:38,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:55:38,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:55:38,302 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:55:38,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2020-09-24 22:55:38,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d080691/3babffe8960347a493e7dcae75dab289/FLAG24ba4684f [2020-09-24 22:55:38,945 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:55:38,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01_bug02_sum01_bug02_base.case.i [2020-09-24 22:55:38,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d080691/3babffe8960347a493e7dcae75dab289/FLAG24ba4684f [2020-09-24 22:55:39,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82d080691/3babffe8960347a493e7dcae75dab289 [2020-09-24 22:55:39,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:55:39,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:55:39,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:39,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:55:39,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:55:39,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbf213c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39, skipping insertion in model container [2020-09-24 22:55:39,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:55:39,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:55:39,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:39,725 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:55:39,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:39,774 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:55:39,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39 WrapperNode [2020-09-24 22:55:39,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:39,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:55:39,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:55:39,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:55:39,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (1/1) ... [2020-09-24 22:55:39,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:55:39,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:55:39,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:55:39,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:55:39,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (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 22:55:39,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:55:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:55:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:55:39,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:55:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:55:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:55:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 22:55:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:55:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:55:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:55:40,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:55:40,216 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 22:55:40,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:40 BoogieIcfgContainer [2020-09-24 22:55:40,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:55:40,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:55:40,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:55:40,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:55:40,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:55:39" (1/3) ... [2020-09-24 22:55:40,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fdbeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:40, skipping insertion in model container [2020-09-24 22:55:40,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:39" (2/3) ... [2020-09-24 22:55:40,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fdbeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:40, skipping insertion in model container [2020-09-24 22:55:40,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:40" (3/3) ... [2020-09-24 22:55:40,232 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02_sum01_bug02_base.case.i [2020-09-24 22:55:40,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:55:40,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:55:40,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:55:40,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:55:40,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:55:40,327 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:55:40,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:55:40,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:55:40,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:55:40,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:55:40,328 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:55:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-24 22:55:40,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 22:55:40,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:40,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:40,365 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:40,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:40,373 INFO L82 PathProgramCache]: Analyzing trace with hash -290415040, now seen corresponding path program 1 times [2020-09-24 22:55:40,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:40,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590237782] [2020-09-24 22:55:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:40,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:40,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:55:40,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-24 22:55:40,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:55:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:55:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:40,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:55:40,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:55:40,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:55:40,759 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 22:55:40,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590237782] [2020-09-24 22:55:40,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:40,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 22:55:40,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781383676] [2020-09-24 22:55:40,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 22:55:40,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:40,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 22:55:40,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 22:55:40,793 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-09-24 22:55:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:40,818 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-09-24 22:55:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 22:55:40,820 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-09-24 22:55:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:40,831 INFO L225 Difference]: With dead ends: 38 [2020-09-24 22:55:40,831 INFO L226 Difference]: Without dead ends: 21 [2020-09-24 22:55:40,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 22:55:40,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-24 22:55:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-24 22:55:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-24 22:55:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-09-24 22:55:40,883 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2020-09-24 22:55:40,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:40,884 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-09-24 22:55:40,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 22:55:40,884 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-09-24 22:55:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-24 22:55:40,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:40,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:40,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:55:40,886 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:40,887 INFO L82 PathProgramCache]: Analyzing trace with hash -304267855, now seen corresponding path program 1 times [2020-09-24 22:55:40,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:40,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170517117] [2020-09-24 22:55:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:41,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:55:41,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 22:55:41,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:55:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:55:41,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:55:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:41,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:41,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:55:41,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:55:41,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:41,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:41,192 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 22:55:41,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170517117] [2020-09-24 22:55:41,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:41,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:55:41,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108364151] [2020-09-24 22:55:41,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:55:41,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:41,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:55:41,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:55:41,200 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-09-24 22:55:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:41,278 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-09-24 22:55:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:55:41,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-24 22:55:41,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:41,280 INFO L225 Difference]: With dead ends: 28 [2020-09-24 22:55:41,281 INFO L226 Difference]: Without dead ends: 23 [2020-09-24 22:55:41,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:55:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-24 22:55:41,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-09-24 22:55:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 22:55:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 22:55:41,288 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-09-24 22:55:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:41,289 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 22:55:41,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:55:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 22:55:41,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 22:55:41,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:41,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:41,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:55:41,291 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:41,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash -887516915, now seen corresponding path program 1 times [2020-09-24 22:55:41,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:41,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591453489] [2020-09-24 22:55:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:41,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:41,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 22:55:41,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:41,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-24 22:55:41,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:55:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:55:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:55:41,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:41,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:41,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:55:41,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:41,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:55:41,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:41,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:41,746 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 22:55:41,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591453489] [2020-09-24 22:55:41,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:41,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:55:41,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356097683] [2020-09-24 22:55:41,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:55:41,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:41,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:55:41,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:55:41,749 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 11 states. [2020-09-24 22:55:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:42,018 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-09-24 22:55:42,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:55:42,019 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-09-24 22:55:42,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:42,020 INFO L225 Difference]: With dead ends: 34 [2020-09-24 22:55:42,020 INFO L226 Difference]: Without dead ends: 29 [2020-09-24 22:55:42,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:55:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-24 22:55:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-09-24 22:55:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:55:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-24 22:55:42,027 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-09-24 22:55:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:42,028 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-24 22:55:42,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:55:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-24 22:55:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 22:55:42,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:42,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:42,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:55:42,030 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:42,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:42,030 INFO L82 PathProgramCache]: Analyzing trace with hash -507920327, now seen corresponding path program 1 times [2020-09-24 22:55:42,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:42,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759029977] [2020-09-24 22:55:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:42,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:42,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 22:55:42,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 22:55:42,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:55:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 22:55:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 22:55:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:42,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:42,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:42,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:55:42,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:42,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:55:42,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:42,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:42,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759029977] [2020-09-24 22:55:42,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:42,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:55:42,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082822765] [2020-09-24 22:55:42,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:55:42,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:42,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:55:42,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:55:42,120 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 3 states. [2020-09-24 22:55:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:42,147 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-09-24 22:55:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:55:42,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-24 22:55:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:42,149 INFO L225 Difference]: With dead ends: 40 [2020-09-24 22:55:42,149 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 22:55:42,149 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 22:55:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 22:55:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 22:55:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:55:42,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-24 22:55:42,157 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2020-09-24 22:55:42,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:42,158 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-24 22:55:42,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:55:42,158 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-24 22:55:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 22:55:42,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:42,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:42,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:55:42,160 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:42,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1934159721, now seen corresponding path program 2 times [2020-09-24 22:55:42,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:42,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104538763] [2020-09-24 22:55:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:42,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:42,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 22:55:42,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:42,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 22:55:42,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 22:55:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:55:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:55:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:42,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:42,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:42,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:42,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104538763] [2020-09-24 22:55:42,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:42,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:55:42,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071825555] [2020-09-24 22:55:42,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:55:42,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:42,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:55:42,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:55:42,677 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2020-09-24 22:55:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:43,099 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-24 22:55:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:55:43,099 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-09-24 22:55:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:43,100 INFO L225 Difference]: With dead ends: 41 [2020-09-24 22:55:43,100 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 22:55:43,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-09-24 22:55:43,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 22:55:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-24 22:55:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 22:55:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-09-24 22:55:43,108 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 26 [2020-09-24 22:55:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:43,108 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-09-24 22:55:43,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:55:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-09-24 22:55:43,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 22:55:43,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:43,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:43,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:55:43,110 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:43,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1064709469, now seen corresponding path program 1 times [2020-09-24 22:55:43,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:43,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238827949] [2020-09-24 22:55:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:43,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:43,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 22:55:43,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 22:55:43,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:55:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 22:55:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:55:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:43,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:43,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:43,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:55:43,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:55:43,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:43,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:43,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238827949] [2020-09-24 22:55:43,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:43,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 22:55:43,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386714863] [2020-09-24 22:55:43,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:55:43,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:43,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:55:43,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:55:43,246 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 5 states. [2020-09-24 22:55:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:43,308 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-09-24 22:55:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:55:43,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-24 22:55:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:43,309 INFO L225 Difference]: With dead ends: 46 [2020-09-24 22:55:43,310 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 22:55:43,310 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 22:55:43,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 22:55:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 22:55:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 22:55:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 22:55:43,316 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2020-09-24 22:55:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:43,316 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 22:55:43,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:55:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 22:55:43,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-24 22:55:43,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:43,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:43,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:55:43,318 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:43,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2001266491, now seen corresponding path program 3 times [2020-09-24 22:55:43,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:43,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636084020] [2020-09-24 22:55:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:43,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:43,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:43,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 22:55:43,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:43,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-24 22:55:43,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 22:55:43,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:55:43,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:55:43,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:43,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:43,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:43,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:55:43,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:55:43,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:43,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 22:55:43,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636084020] [2020-09-24 22:55:43,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:43,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:55:43,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859810124] [2020-09-24 22:55:43,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:55:43,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:43,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:55:43,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:55:43,916 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 22:55:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:44,266 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-09-24 22:55:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:55:44,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-09-24 22:55:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:44,269 INFO L225 Difference]: With dead ends: 46 [2020-09-24 22:55:44,269 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 22:55:44,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-09-24 22:55:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 22:55:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-24 22:55:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 22:55:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-09-24 22:55:44,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 32 [2020-09-24 22:55:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:44,283 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-09-24 22:55:44,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:55:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-09-24 22:55:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:55:44,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:44,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:44,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:55:44,286 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:44,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:44,286 INFO L82 PathProgramCache]: Analyzing trace with hash -674418815, now seen corresponding path program 2 times [2020-09-24 22:55:44,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:44,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491147062] [2020-09-24 22:55:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:44,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:55:44,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 22:55:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:55:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 22:55:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:55:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:44,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:44,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:55:44,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:55:44,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:44,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491147062] [2020-09-24 22:55:44,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:44,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:55:44,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184654688] [2020-09-24 22:55:44,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:55:44,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:44,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:55:44,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:55:44,516 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 7 states. [2020-09-24 22:55:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:44,601 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-09-24 22:55:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:55:44,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 22:55:44,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:44,603 INFO L225 Difference]: With dead ends: 56 [2020-09-24 22:55:44,603 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 22:55:44,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:55:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 22:55:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 22:55:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:55:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-24 22:55:44,614 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 33 [2020-09-24 22:55:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:44,615 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-24 22:55:44,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:55:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-24 22:55:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 22:55:44,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:44,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:44,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:55:44,618 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash -809826651, now seen corresponding path program 3 times [2020-09-24 22:55:44,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:44,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691827603] [2020-09-24 22:55:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:55:44,643 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:55:44,643 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:55:44,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:55:44,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:55:44 BoogieIcfgContainer [2020-09-24 22:55:44,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:55:44,684 INFO L168 Benchmark]: Toolchain (without parser) took 5347.97 ms. Allocated memory was 140.0 MB in the beginning and 248.0 MB in the end (delta: 108.0 MB). Free memory was 103.6 MB in the beginning and 167.1 MB in the end (delta: -63.4 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:44,685 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 22:55:44,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.69 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:44,688 INFO L168 Benchmark]: Boogie Preprocessor took 125.54 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 93.6 MB in the beginning and 180.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:44,689 INFO L168 Benchmark]: RCFGBuilder took 319.17 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 167.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:44,692 INFO L168 Benchmark]: TraceAbstraction took 4451.55 ms. Allocated memory was 200.8 MB in the beginning and 248.0 MB in the end (delta: 47.2 MB). Free memory was 167.7 MB in the beginning and 167.1 MB in the end (delta: 605.0 kB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:44,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 442.69 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.54 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 93.6 MB in the beginning and 180.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 319.17 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 167.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4451.55 ms. Allocated memory was 200.8 MB in the beginning and 248.0 MB in the end (delta: 47.2 MB). Free memory was 167.7 MB in the beginning and 167.1 MB in the end (delta: 605.0 kB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND FALSE !(i==4) [L13] i++ [L13] COND TRUE i<=n [L14] sn = sn + (2) [L15] COND TRUE i==4 [L15] sn=-10 [L13] i++ [L13] COND FALSE !(i<=n) [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 145 SDtfs, 48 SDslu, 468 SDs, 0 SdLazy, 421 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 21754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 23/60 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 incorrect! Received shutdown request...