/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:08:00,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:08:00,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:08:00,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:08:00,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:08:00,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:08:00,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:08:00,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:08:00,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:08:00,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:08:00,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:08:00,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:08:00,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:08:00,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:08:00,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:08:00,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:08:00,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:08:00,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:08:00,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:08:00,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:08:00,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:08:00,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:08:00,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:08:00,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:08:00,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:08:00,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:08:00,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:08:00,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:08:00,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:08:00,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 17:08:00,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:08:00,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:08:00,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:08:00,819 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 17:08:00,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:08:00,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:08:00,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:08:00,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:08:00,869 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:08:00,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:08:00,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:08:00,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:08:00,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:08:00,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:08:00,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:08:00,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:08:00,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:08:00,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:08:00,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:08:00,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:08:00,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:08:00,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:08:00,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:08:00,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:08:00,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:08:00,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:08:00,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:08:00,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:08:00,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:08:00,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:08:00,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:08:00,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:08:00,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:08:00,876 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;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;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;log-additional-information=true; [2020-09-24 17:08:01,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:08:01,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:08:01,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:08:01,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:08:01,367 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:08:01,368 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-24 17:08:01,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b286129/7e34a3a55756415b9d96dc24bb446026/FLAG279c6a452 [2020-09-24 17:08:01,988 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:08:01,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-24 17:08:01,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b286129/7e34a3a55756415b9d96dc24bb446026/FLAG279c6a452 [2020-09-24 17:08:02,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b286129/7e34a3a55756415b9d96dc24bb446026 [2020-09-24 17:08:02,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:08:02,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:08:02,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:02,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:08:02,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:08:02,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f72d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02, skipping insertion in model container [2020-09-24 17:08:02,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:08:02,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:08:02,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:02,632 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:08:02,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:02,679 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:08:02,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02 WrapperNode [2020-09-24 17:08:02,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:02,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:08:02,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:08:02,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:08:02,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (1/1) ... [2020-09-24 17:08:02,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:08:02,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:08:02,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:08:02,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:08:02,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (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 17:08:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:08:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:08:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 17:08:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:08:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:08:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:08:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 17:08:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:08:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:08:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:08:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:08:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:08:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:08:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:08:03,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:08:03,212 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:08:03,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:03 BoogieIcfgContainer [2020-09-24 17:08:03,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:08:03,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:08:03,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:08:03,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:08:03,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:08:02" (1/3) ... [2020-09-24 17:08:03,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cfe285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:03, skipping insertion in model container [2020-09-24 17:08:03,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:02" (2/3) ... [2020-09-24 17:08:03,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cfe285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:03, skipping insertion in model container [2020-09-24 17:08:03,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:03" (3/3) ... [2020-09-24 17:08:03,228 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-09-24 17:08:03,241 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:08:03,254 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:08:03,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:08:03,306 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:08:03,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:08:03,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:08:03,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:08:03,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:08:03,307 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:08:03,307 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:08:03,307 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:08:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-24 17:08:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 17:08:03,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:03,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:03,341 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:03,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:03,348 INFO L82 PathProgramCache]: Analyzing trace with hash 606292035, now seen corresponding path program 1 times [2020-09-24 17:08:03,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:03,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559435651] [2020-09-24 17:08:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:03,654 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:03,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 17:08:03,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:03,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 17:08:03,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 17:08:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:08:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:03,766 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:03,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:03,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:03,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 17:08:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 17:08:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:03,846 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:03,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:08:03,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 17:08:03,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:08:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:03,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 17:08:03,878 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 17:08:03,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559435651] [2020-09-24 17:08:03,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:03,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:08:03,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180687125] [2020-09-24 17:08:03,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:08:03,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:03,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:08:03,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:08:03,914 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-09-24 17:08:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:04,076 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-24 17:08:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:08:04,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-24 17:08:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:04,091 INFO L225 Difference]: With dead ends: 73 [2020-09-24 17:08:04,091 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 17:08:04,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 17:08:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 17:08:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-24 17:08:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 17:08:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-24 17:08:04,146 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-24 17:08:04,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:04,146 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-24 17:08:04,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:08:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-24 17:08:04,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 17:08:04,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:04,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:04,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:08:04,149 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:04,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:04,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1986388344, now seen corresponding path program 1 times [2020-09-24 17:08:04,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:04,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163100249] [2020-09-24 17:08:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:04,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:04,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 17:08:04,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:04,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-24 17:08:04,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:08:04,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 17:08:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:08:04,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 17:08:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:04,840 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:04,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:04,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:08:04,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 17:08:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:04,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:04,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:08:04,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:08:04,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:08:04,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:04,878 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 17:08:04,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163100249] [2020-09-24 17:08:04,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:04,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:08:04,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316297040] [2020-09-24 17:08:04,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:08:04,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:04,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:08:04,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:08:04,886 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 8 states. [2020-09-24 17:08:05,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:05,186 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-24 17:08:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:08:05,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-24 17:08:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:05,188 INFO L225 Difference]: With dead ends: 60 [2020-09-24 17:08:05,188 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 17:08:05,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:08:05,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 17:08:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-09-24 17:08:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 17:08:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-09-24 17:08:05,199 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2020-09-24 17:08:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:05,200 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-09-24 17:08:05,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:08:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-09-24 17:08:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 17:08:05,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:05,202 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:05,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:08:05,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:05,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:05,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1471095088, now seen corresponding path program 1 times [2020-09-24 17:08:05,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:05,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059151489] [2020-09-24 17:08:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:05,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:06,561 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:06,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 17:08:06,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1330 [2020-09-24 17:08:06,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:08:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 17:08:06,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:08:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:06,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:06,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:06,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:06,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:06,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:08:06,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:06,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:06,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 17:08:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:06,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:06,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:08:06,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:06,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:08:06,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:08:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:06,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059151489] [2020-09-24 17:08:06,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:08:06,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:08:06,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656583975] [2020-09-24 17:08:06,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:08:06,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:06,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:08:06,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:08:06,743 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 9 states. [2020-09-24 17:08:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:07,090 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-24 17:08:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:08:07,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-24 17:08:07,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:07,092 INFO L225 Difference]: With dead ends: 66 [2020-09-24 17:08:07,092 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 17:08:07,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:08:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 17:08:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-09-24 17:08:07,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 17:08:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-09-24 17:08:07,108 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2020-09-24 17:08:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:07,109 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-09-24 17:08:07,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:08:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-09-24 17:08:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 17:08:07,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:07,114 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:07,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:08:07,115 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:07,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:07,115 INFO L82 PathProgramCache]: Analyzing trace with hash -93423064, now seen corresponding path program 2 times [2020-09-24 17:08:07,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:07,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398279219] [2020-09-24 17:08:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:09,135 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:09,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 17:08:09,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1968 [2020-09-24 17:08:09,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:08:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 17:08:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:08:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:09,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:09,297 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:09,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:08:09,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:09,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 17:08:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:09,309 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:09,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:08:09,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:08:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:08:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:09,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398279219] [2020-09-24 17:08:09,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:08:09,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:08:09,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452546750] [2020-09-24 17:08:09,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:08:09,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:09,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:08:09,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:08:09,321 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 10 states. [2020-09-24 17:08:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:09,666 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-09-24 17:08:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:08:09,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-24 17:08:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:09,668 INFO L225 Difference]: With dead ends: 72 [2020-09-24 17:08:09,669 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 17:08:09,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:08:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 17:08:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-24 17:08:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 17:08:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-09-24 17:08:09,683 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2020-09-24 17:08:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:09,685 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-09-24 17:08:09,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:08:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-09-24 17:08:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 17:08:09,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:09,687 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:09,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:08:09,688 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:09,689 INFO L82 PathProgramCache]: Analyzing trace with hash 399520640, now seen corresponding path program 3 times [2020-09-24 17:08:09,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:09,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862851514] [2020-09-24 17:08:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:09,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:09,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:12,371 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:12,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 17:08:12,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:12,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2652 [2020-09-24 17:08:12,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:12,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:08:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 17:08:12,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:08:12,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:12,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:12,711 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:12,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:12,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:12,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:08:12,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:12,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:12,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 17:08:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:12,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:12,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:08:12,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 17:08:12,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:08:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:08:12,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 17:08:12,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862851514] [2020-09-24 17:08:12,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:08:12,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 17:08:12,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170900882] [2020-09-24 17:08:12,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:08:12,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:12,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:08:12,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:08:12,983 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 14 states. [2020-09-24 17:08:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:14,090 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-24 17:08:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:08:14,091 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-24 17:08:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:14,092 INFO L225 Difference]: With dead ends: 55 [2020-09-24 17:08:14,093 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:08:14,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-24 17:08:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:08:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:08:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:08:14,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:08:14,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-09-24 17:08:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:14,097 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:08:14,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:08:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:08:14,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:08:14,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:08:14,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:08:14,346 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 17:08:14,346 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 17:08:14,346 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:08:14,347 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 17:08:14,347 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:08:14,347 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:08:14,347 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:08:14,348 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:08:14,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:08:14,348 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 17:08:14,348 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 17:08:14,349 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 17:08:14,349 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-09-24 17:08:14,349 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 17:08:14,349 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 17:08:14,349 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 17:08:14,350 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 17:08:14,350 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 17:08:14,350 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 17:08:14,350 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 17:08:14,351 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 17:08:14,351 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-24 17:08:14,351 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 17:08:14,351 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 17:08:14,352 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 17:08:14,352 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-09-24 17:08:14,352 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-24 17:08:14,352 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-24 17:08:14,353 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 17:08:14,353 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 17:08:14,353 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 17:08:14,353 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-09-24 17:08:14,354 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-09-24 17:08:14,354 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 17:08:14,354 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 17:08:14,354 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-09-24 17:08:14,354 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-09-24 17:08:14,355 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-09-24 17:08:14,355 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 17:08:14,355 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-09-24 17:08:14,356 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 17:08:14,356 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 17:08:14,356 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-24 17:08:14,357 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~pa~0.base |main_~#ad1~0.base|) (= (+ (* .cse0 8) |main_~#ad1~0.offset|) main_~pa~0.offset) (or (= (+ (* main_~i~0 8) |main_~#ad1~0.offset|) main_~pa~0.offset) (< (* 8 main_~i~0) (* 8 .cse0))) (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|))) [2020-09-24 17:08:14,357 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 28) the Hoare annotation is: (let ((.cse1 (+ (* main_~i~0 8) |main_~#ad1~0.offset|)) (.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~pa~0.base |main_~#ad1~0.base|) (= (+ (* .cse0 8) |main_~#ad1~0.offset|) main_~pa~0.offset) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) .cse1)) (or (= .cse1 main_~pa~0.offset) (< (* 8 main_~i~0) (* 8 .cse0))) (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|))) [2020-09-24 17:08:14,357 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-09-24 17:08:14,358 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 17:08:14,358 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-24 17:08:14,358 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-09-24 17:08:14,358 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-24 17:08:14,358 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-09-24 17:08:14,359 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-09-24 17:08:14,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 17:08:14,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 17:08:14,387 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 17:08:14,388 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 17:08:14,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:08:14 BoogieIcfgContainer [2020-09-24 17:08:14,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:08:14,395 INFO L168 Benchmark]: Toolchain (without parser) took 12075.99 ms. Allocated memory was 142.6 MB in the beginning and 300.9 MB in the end (delta: 158.3 MB). Free memory was 103.2 MB in the beginning and 103.1 MB in the end (delta: 122.3 kB). Peak memory consumption was 158.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:14,396 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 142.6 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:08:14,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.83 ms. Allocated memory is still 142.6 MB. Free memory was 102.6 MB in the beginning and 92.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:14,398 INFO L168 Benchmark]: Boogie Preprocessor took 130.62 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 92.5 MB in the beginning and 180.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:14,399 INFO L168 Benchmark]: RCFGBuilder took 406.04 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 162.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:14,400 INFO L168 Benchmark]: TraceAbstraction took 11172.15 ms. Allocated memory was 202.9 MB in the beginning and 300.9 MB in the end (delta: 98.0 MB). Free memory was 162.8 MB in the beginning and 103.1 MB in the end (delta: 59.7 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:08:14,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 142.6 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 356.83 ms. Allocated memory is still 142.6 MB. Free memory was 102.6 MB in the beginning and 92.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.62 ms. Allocated memory was 142.6 MB in the beginning and 202.9 MB in the end (delta: 60.3 MB). Free memory was 92.5 MB in the beginning and 180.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.04 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 162.8 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11172.15 ms. Allocated memory was 202.9 MB in the beginning and 300.9 MB in the end (delta: 98.0 MB). Free memory was 162.8 MB in the beginning and 103.1 MB in the end (delta: 59.7 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant [2020-09-24 17:08:14,413 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 17:08:14,414 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 17:08:14,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 17:08:14,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((pa == ad1 && unknown-#memory_int-unknown[pa][pa] * 8 + ad1 == pa) && (i * 8 + ad1 == pa || 8 * i < 8 * unknown-#memory_int-unknown[pa][pa])) && ad1 <= ad2) && ad1 == ad2) && ad2 <= ad1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.7s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 171 SDtfs, 163 SDslu, 497 SDs, 0 SdLazy, 652 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=4, 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 16 NumberOfFragments, 114 HoareAnnotationTreeSize, 12 FomulaSimplifications, 110 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 53520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/36 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...