/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 16:25:41,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 16:25:41,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 16:25:41,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 16:25:41,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 16:25:41,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 16:25:41,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 16:25:41,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 16:25:41,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 16:25:41,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 16:25:41,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 16:25:41,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 16:25:41,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 16:25:41,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 16:25:41,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 16:25:41,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 16:25:41,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 16:25:41,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 16:25:41,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 16:25:41,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 16:25:41,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 16:25:41,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 16:25:41,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 16:25:41,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 16:25:41,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 16:25:41,839 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 16:25:41,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 16:25:41,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 16:25:41,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 16:25:41,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 16:25:41,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 16:25:41,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 16:25:41,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 16:25:41,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 16:25:41,841 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 16:25:41,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 16:25:41,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 16:25:41,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 16:25:41,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 16:25:41,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 16:25:41,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 16:25:41,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 16:25:41,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 16:25:41,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 16:25:41,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 16:25:41,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 16:25:41,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 16:25:41,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 16:25:41,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 16:25:41,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 16:25:42,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 16:25:42,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 16:25:42,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 16:25:42,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 16:25:42,139 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 16:25:42,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c [2021-05-02 16:25:42,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bda13ef/19b1cf278a9d4a45bd947db5789d7afe/FLAG6fa3a00fb [2021-05-02 16:25:42,620 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 16:25:42,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c [2021-05-02 16:25:42,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bda13ef/19b1cf278a9d4a45bd947db5789d7afe/FLAG6fa3a00fb [2021-05-02 16:25:42,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bda13ef/19b1cf278a9d4a45bd947db5789d7afe [2021-05-02 16:25:42,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 16:25:42,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 16:25:42,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 16:25:42,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 16:25:42,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 16:25:42,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25fe75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42, skipping insertion in model container [2021-05-02 16:25:42,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 16:25:42,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 16:25:42,795 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c[537,550] [2021-05-02 16:25:42,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:25:42,808 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 16:25:42,815 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prodbin-ll_unwindbound2.c[537,550] [2021-05-02 16:25:42,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:25:42,827 INFO L208 MainTranslator]: Completed translation [2021-05-02 16:25:42,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42 WrapperNode [2021-05-02 16:25:42,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 16:25:42,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 16:25:42,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 16:25:42,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 16:25:42,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (1/1) ... [2021-05-02 16:25:42,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 16:25:42,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 16:25:42,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 16:25:42,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 16:25:42,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-02 16:25:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 16:25:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 16:25:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 16:25:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 16:25:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 16:25:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 16:25:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 16:25:42,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 16:25:42,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 16:25:43,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 16:25:43,294 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 16:25:43,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:25:43 BoogieIcfgContainer [2021-05-02 16:25:43,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 16:25:43,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 16:25:43,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 16:25:43,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 16:25:43,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 04:25:42" (1/3) ... [2021-05-02 16:25:43,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e19dee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:25:43, skipping insertion in model container [2021-05-02 16:25:43,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:25:42" (2/3) ... [2021-05-02 16:25:43,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e19dee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:25:43, skipping insertion in model container [2021-05-02 16:25:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:25:43" (3/3) ... [2021-05-02 16:25:43,299 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound2.c [2021-05-02 16:25:43,303 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 16:25:43,325 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 16:25:43,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 16:25:43,357 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 16:25:43,357 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 16:25:43,357 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 16:25:43,357 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 16:25:43,357 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 16:25:43,357 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 16:25:43,357 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 16:25:43,357 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 16:25:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 16:25:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 16:25:43,388 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:25:43,389 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:25:43,389 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:25:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:25:43,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1523633710, now seen corresponding path program 1 times [2021-05-02 16:25:43,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:25:43,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640268895] [2021-05-02 16:25:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:25:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 16:25:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:43,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 16:25:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 16:25:43,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:25:43,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640268895] [2021-05-02 16:25:43,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640268895] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:25:43,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:25:43,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 16:25:43,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481042110] [2021-05-02 16:25:43,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 16:25:43,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:25:43,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 16:25:43,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:25:43,585 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 16:25:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:25:43,673 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2021-05-02 16:25:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 16:25:43,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-02 16:25:43,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:25:43,681 INFO L225 Difference]: With dead ends: 52 [2021-05-02 16:25:43,681 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 16:25:43,684 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:25:43,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 16:25:43,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-02 16:25:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 16:25:43,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-05-02 16:25:43,716 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2021-05-02 16:25:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:25:43,716 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-05-02 16:25:43,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 16:25:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-05-02 16:25:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 16:25:43,718 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:25:43,719 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:25:43,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 16:25:43,720 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:25:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:25:43,721 INFO L82 PathProgramCache]: Analyzing trace with hash -991958694, now seen corresponding path program 1 times [2021-05-02 16:25:43,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:25:43,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065034733] [2021-05-02 16:25:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:25:43,761 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:25:43,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416200754] [2021-05-02 16:25:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:43,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 16:25:43,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:25:43,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:43,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:43,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:43,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:43,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 16:25:44,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:25:44,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065034733] [2021-05-02 16:25:44,012 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:25:44,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416200754] [2021-05-02 16:25:44,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416200754] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:25:44,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:25:44,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 16:25:44,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436834560] [2021-05-02 16:25:44,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 16:25:44,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:25:44,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 16:25:44,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 16:25:44,016 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 16:25:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:25:44,032 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 16:25:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 16:25:44,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-02 16:25:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:25:44,034 INFO L225 Difference]: With dead ends: 34 [2021-05-02 16:25:44,034 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 16:25:44,035 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 16:25:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 16:25:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 16:25:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 16:25:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-05-02 16:25:44,042 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2021-05-02 16:25:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:25:44,042 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-05-02 16:25:44,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 16:25:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-05-02 16:25:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 16:25:44,044 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:25:44,044 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:25:44,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 16:25:44,264 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:25:44,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:25:44,264 INFO L82 PathProgramCache]: Analyzing trace with hash -990171234, now seen corresponding path program 1 times [2021-05-02 16:25:44,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:25:44,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922909452] [2021-05-02 16:25:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:25:44,276 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:25:44,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541041990] [2021-05-02 16:25:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:44,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 16:25:44,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:25:44,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 16:25:44,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:25:44,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922909452] [2021-05-02 16:25:44,454 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:25:44,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541041990] [2021-05-02 16:25:44,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541041990] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:25:44,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:25:44,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 16:25:44,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000223914] [2021-05-02 16:25:44,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 16:25:44,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:25:44,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 16:25:44,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 16:25:44,455 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 16:25:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:25:44,548 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-05-02 16:25:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 16:25:44,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 16:25:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:25:44,550 INFO L225 Difference]: With dead ends: 42 [2021-05-02 16:25:44,550 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 16:25:44,551 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:25:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 16:25:44,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 16:25:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 16:25:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-05-02 16:25:44,557 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 18 [2021-05-02 16:25:44,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:25:44,557 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-05-02 16:25:44,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 16:25:44,557 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-05-02 16:25:44,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 16:25:44,558 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:25:44,558 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-02 16:25:44,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:44,778 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:25:44,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:25:44,778 INFO L82 PathProgramCache]: Analyzing trace with hash 584619061, now seen corresponding path program 1 times [2021-05-02 16:25:44,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:25:44,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334126736] [2021-05-02 16:25:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:25:44,794 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:25:44,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105426949] [2021-05-02 16:25:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:44,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 16:25:44,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:25:44,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:44,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 16:25:45,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:25:45,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334126736] [2021-05-02 16:25:45,020 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:25:45,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105426949] [2021-05-02 16:25:45,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105426949] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:25:45,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:25:45,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 16:25:45,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983759714] [2021-05-02 16:25:45,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 16:25:45,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:25:45,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 16:25:45,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 16:25:45,021 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 16:25:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:25:45,059 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-05-02 16:25:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 16:25:45,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-02 16:25:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:25:45,061 INFO L225 Difference]: With dead ends: 44 [2021-05-02 16:25:45,061 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 16:25:45,061 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 16:25:45,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 16:25:45,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-05-02 16:25:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 16:25:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-05-02 16:25:45,068 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2021-05-02 16:25:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:25:45,069 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-05-02 16:25:45,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 16:25:45,069 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-05-02 16:25:45,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 16:25:45,069 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:25:45,069 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:25:45,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:45,285 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:25:45,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:25:45,286 INFO L82 PathProgramCache]: Analyzing trace with hash 586406521, now seen corresponding path program 1 times [2021-05-02 16:25:45,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:25:45,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481023056] [2021-05-02 16:25:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:25:45,297 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:25:45,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280351052] [2021-05-02 16:25:45,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:45,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 16:25:45,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:25:45,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 16:25:45,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:25:45,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481023056] [2021-05-02 16:25:45,843 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:25:45,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280351052] [2021-05-02 16:25:45,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280351052] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:25:45,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:25:45,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 16:25:45,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935562642] [2021-05-02 16:25:45,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 16:25:45,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:25:45,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 16:25:45,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:25:45,845 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:25:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:25:45,973 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-05-02 16:25:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 16:25:45,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-05-02 16:25:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:25:45,974 INFO L225 Difference]: With dead ends: 55 [2021-05-02 16:25:45,975 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 16:25:45,975 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-05-02 16:25:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 16:25:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2021-05-02 16:25:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 16:25:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-02 16:25:45,981 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 28 [2021-05-02 16:25:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:25:45,981 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-02 16:25:45,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:25:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-02 16:25:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 16:25:45,982 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:25:45,982 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:25:46,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:46,205 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:25:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:25:46,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1395753147, now seen corresponding path program 1 times [2021-05-02 16:25:46,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:25:46,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714500245] [2021-05-02 16:25:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:25:46,215 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:25:46,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087357004] [2021-05-02 16:25:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:46,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 16:25:46,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:25:46,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 16:25:46,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:25:46,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714500245] [2021-05-02 16:25:46,573 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:25:46,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087357004] [2021-05-02 16:25:46,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087357004] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:25:46,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:25:46,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 16:25:46,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7730701] [2021-05-02 16:25:46,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 16:25:46,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:25:46,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 16:25:46,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 16:25:46,575 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:25:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:25:50,333 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2021-05-02 16:25:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 16:25:50,334 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-05-02 16:25:50,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:25:50,335 INFO L225 Difference]: With dead ends: 57 [2021-05-02 16:25:50,335 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 16:25:50,335 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-05-02 16:25:50,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 16:25:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2021-05-02 16:25:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 38 states have internal predecessors, (41), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 16:25:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-05-02 16:25:50,343 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 28 [2021-05-02 16:25:50,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:25:50,343 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-05-02 16:25:50,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 16:25:50,344 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-05-02 16:25:50,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 16:25:50,345 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:25:50,345 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:25:50,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:50,565 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:25:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:25:50,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1513703477, now seen corresponding path program 1 times [2021-05-02 16:25:50,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:25:50,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86682911] [2021-05-02 16:25:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:25:50,573 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:25:50,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854931849] [2021-05-02 16:25:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:25:50,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 16:25:50,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:25:50,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:25:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 16:25:50,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:25:50,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86682911] [2021-05-02 16:25:50,786 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:25:50,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854931849] [2021-05-02 16:25:50,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854931849] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:25:50,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:25:50,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 16:25:50,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052241408] [2021-05-02 16:25:50,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 16:25:50,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:25:50,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 16:25:50,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-05-02 16:25:50,787 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:25:52,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:25:52,971 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-05-02 16:25:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 16:25:52,971 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2021-05-02 16:25:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:25:52,973 INFO L225 Difference]: With dead ends: 59 [2021-05-02 16:25:52,973 INFO L226 Difference]: Without dead ends: 52 [2021-05-02 16:25:52,974 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 183.7ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-05-02 16:25:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-02 16:25:52,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2021-05-02 16:25:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 16:25:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-05-02 16:25:52,978 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 34 [2021-05-02 16:25:52,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:25:52,978 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-05-02 16:25:52,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:25:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-05-02 16:25:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 16:25:52,979 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:25:52,979 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:25:53,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:53,195 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:25:53,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:25:53,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1456887472, now seen corresponding path program 2 times [2021-05-02 16:25:53,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:25:53,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925343274] [2021-05-02 16:25:53,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:25:53,204 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:25:53,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512795634] [2021-05-02 16:25:53,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:53,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 16:25:53,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-05-02 16:25:53,255 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 16:25:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 16:25:53,273 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 16:25:53,312 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 16:25:53,312 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 16:25:53,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:25:53,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 04:25:53 BoogieIcfgContainer [2021-05-02 16:25:53,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 16:25:53,599 INFO L168 Benchmark]: Toolchain (without parser) took 10954.55 ms. Allocated memory was 219.2 MB in the beginning and 303.0 MB in the end (delta: 83.9 MB). Free memory was 184.2 MB in the beginning and 284.1 MB in the end (delta: -99.9 MB). Peak memory consumption was 143.9 MB. Max. memory is 8.0 GB. [2021-05-02 16:25:53,599 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 219.2 MB. Free memory is still 201.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 16:25:53,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.77 ms. Allocated memory is still 219.2 MB. Free memory was 183.9 MB in the beginning and 174.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 16:25:53,599 INFO L168 Benchmark]: Boogie Preprocessor took 68.06 ms. Allocated memory is still 219.2 MB. Free memory was 174.3 MB in the beginning and 203.3 MB in the end (delta: -29.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2021-05-02 16:25:53,600 INFO L168 Benchmark]: RCFGBuilder took 397.69 ms. Allocated memory is still 219.2 MB. Free memory was 202.8 MB in the beginning and 187.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 16:25:53,601 INFO L168 Benchmark]: TraceAbstraction took 10302.71 ms. Allocated memory was 219.2 MB in the beginning and 303.0 MB in the end (delta: 83.9 MB). Free memory was 187.1 MB in the beginning and 284.1 MB in the end (delta: -97.0 MB). Peak memory consumption was 146.3 MB. Max. memory is 8.0 GB. [2021-05-02 16:25:53,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 219.2 MB. Free memory is still 201.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 181.77 ms. Allocated memory is still 219.2 MB. Free memory was 183.9 MB in the beginning and 174.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.06 ms. Allocated memory is still 219.2 MB. Free memory was 174.3 MB in the beginning and 203.3 MB in the end (delta: -29.1 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 397.69 ms. Allocated memory is still 219.2 MB. Free memory was 202.8 MB in the beginning and 187.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10302.71 ms. Allocated memory was 219.2 MB in the beginning and 303.0 MB in the end (delta: 83.9 MB). Free memory was 187.1 MB in the beginning and 284.1 MB in the end (delta: -97.0 MB). Peak memory consumption was 146.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] int counter = 0; VAL [\old(counter)=6, counter=0] [L22] int a, b; [L23] long long x, y, z; [L25] a = __VERIFIER_nondet_int() [L26] b = __VERIFIER_nondet_int() [L27] CALL assume_abort_if_not(b >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L10] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L27] RET assume_abort_if_not(b >= 1) VAL [\old(counter)=0, a=2, b=4, counter=0] [L29] x = a [L30] y = b [L31] z = 0 VAL [\old(counter)=0, a=2, b=4, counter=0, x=2, y=4, z=0] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, b=4, counter=1, counter++=0, x=2, y=4, z=0] [L33] COND TRUE counter++<2 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=4, counter=1, x=2, y=4, z=0] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=4, counter=1, x=2, y=4, z=0] [L38] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=4, counter=1, x=2, y=4, z=0] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=2, b=4, counter=1, x=4, y=2, z=0] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, b=4, counter=2, counter++=1, x=4, y=2, z=0] [L33] COND TRUE counter++<2 [L34] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L13] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L34] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(counter)=0, a=2, b=4, counter=2, x=4, y=2, z=0] [L35] COND FALSE !(!(y != 0)) VAL [\old(counter)=0, a=2, b=4, counter=2, x=4, y=2, z=0] [L38] COND FALSE !(y % 2 == 1) VAL [\old(counter)=0, a=2, b=4, counter=2, x=4, y=2, z=0] [L42] x = 2 * x [L43] y = y / 2 VAL [\old(counter)=0, a=2, b=4, counter=2, x=8, y=1, z=0] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, b=4, counter=3, counter++=2, x=8, y=1, z=0] [L33] COND FALSE !(counter++<2) [L45] CALL __VERIFIER_assert(z == (long long) a * b) VAL [\old(cond)=0, \old(counter)=0, counter=3] [L13] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] [L15] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10180.3ms, OverallIterations: 8, TraceHistogramMax: 3, EmptinessCheckTime: 19.5ms, AutomataDifference: 6342.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 161 SDtfs, 120 SDslu, 542 SDs, 0 SdLazy, 522 SolverSat, 32 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5961.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 613.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=6, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 61.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 79.7ms SsaConstructionTime, 309.8ms SatisfiabilityAnalysisTime, 1318.7ms InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 742 SizeOfPredicates, 15 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 12/26 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...