/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/divbin2_unwindbound1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 14:27:08,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 14:27:08,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 14:27:08,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 14:27:08,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 14:27:08,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 14:27:08,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 14:27:08,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 14:27:08,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 14:27:08,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 14:27:08,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 14:27:08,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 14:27:08,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 14:27:08,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 14:27:08,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 14:27:08,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 14:27:08,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 14:27:08,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 14:27:08,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 14:27:08,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 14:27:08,956 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 14:27:08,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 14:27:08,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 14:27:08,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 14:27:08,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 14:27:08,982 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 14:27:08,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 14:27:08,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 14:27:08,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 14:27:08,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 14:27:08,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 14:27:08,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 14:27:08,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 14:27:08,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 14:27:08,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 14:27:08,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 14:27:08,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 14:27:08,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 14:27:08,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 14:27:08,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 14:27:08,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 14:27:08,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 14:27:08,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 14:27:08,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 14:27:08,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 14:27:08,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 14:27:08,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 14:27:08,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 14:27:08,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 14:27:08,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 14:27:09,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 14:27:09,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 14:27:09,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 14:27:09,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 14:27:09,276 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 14:27:09,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound1.i [2021-05-02 14:27:09,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8c613d2/fb316d040b544aafab3bfc3ea716c788/FLAG02d9c05d5 [2021-05-02 14:27:09,659 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 14:27:09,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound1.i [2021-05-02 14:27:09,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8c613d2/fb316d040b544aafab3bfc3ea716c788/FLAG02d9c05d5 [2021-05-02 14:27:10,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8c613d2/fb316d040b544aafab3bfc3ea716c788 [2021-05-02 14:27:10,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 14:27:10,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 14:27:10,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 14:27:10,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 14:27:10,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 14:27:10,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a1c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10, skipping insertion in model container [2021-05-02 14:27:10,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 14:27:10,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 14:27:10,230 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/divbin2_unwindbound1.i[959,972] [2021-05-02 14:27:10,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:27:10,244 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 14:27:10,273 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/divbin2_unwindbound1.i[959,972] [2021-05-02 14:27:10,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:27:10,306 INFO L208 MainTranslator]: Completed translation [2021-05-02 14:27:10,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10 WrapperNode [2021-05-02 14:27:10,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 14:27:10,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 14:27:10,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 14:27:10,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 14:27:10,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (1/1) ... [2021-05-02 14:27:10,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 14:27:10,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 14:27:10,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 14:27:10,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 14:27:10,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (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 14:27:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 14:27:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 14:27:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 14:27:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 14:27:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 14:27:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 14:27:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 14:27:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 14:27:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 14:27:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 14:27:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 14:27:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 14:27:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 14:27:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 14:27:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 14:27:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 14:27:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 14:27:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 14:27:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 14:27:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 14:27:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 14:27:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 14:27:10,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 14:27:10,663 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 14:27:10,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:27:10 BoogieIcfgContainer [2021-05-02 14:27:10,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 14:27:10,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 14:27:10,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 14:27:10,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 14:27:10,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 02:27:10" (1/3) ... [2021-05-02 14:27:10,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9b4540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:27:10, skipping insertion in model container [2021-05-02 14:27:10,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:27:10" (2/3) ... [2021-05-02 14:27:10,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9b4540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:27:10, skipping insertion in model container [2021-05-02 14:27:10,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:27:10" (3/3) ... [2021-05-02 14:27:10,679 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound1.i [2021-05-02 14:27:10,683 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 14:27:10,685 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 14:27:10,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 14:27:10,732 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 14:27:10,732 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 14:27:10,732 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 14:27:10,732 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 14:27:10,732 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 14:27:10,732 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 14:27:10,732 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 14:27:10,732 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 14:27:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 14:27:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 14:27:10,746 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:27:10,746 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:27:10,747 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:27:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:27:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash -2126508982, now seen corresponding path program 1 times [2021-05-02 14:27:10,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:27:10,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272558828] [2021-05-02 14:27:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:27:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:27:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 14:27:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:27:10,878 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 14:27:10,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:27:10,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272558828] [2021-05-02 14:27:10,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272558828] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:27:10,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:27:10,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 14:27:10,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565386987] [2021-05-02 14:27:10,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 14:27:10,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:27:10,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 14:27:10,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:27:10,892 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 14:27:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:27:10,945 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2021-05-02 14:27:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 14:27:10,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 14:27:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:27:10,951 INFO L225 Difference]: With dead ends: 44 [2021-05-02 14:27:10,952 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 14:27:10,954 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:27:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 14:27:10,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-05-02 14:27:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 14:27:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-05-02 14:27:10,980 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2021-05-02 14:27:10,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:27:10,980 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-05-02 14:27:10,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 14:27:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-05-02 14:27:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 14:27:10,981 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:27:10,981 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:27:10,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 14:27:10,981 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:27:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:27:10,982 INFO L82 PathProgramCache]: Analyzing trace with hash 941422680, now seen corresponding path program 1 times [2021-05-02 14:27:10,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:27:10,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543003150] [2021-05-02 14:27:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:27:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:27:11,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 14:27:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:27:11,067 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 14:27:11,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:27:11,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543003150] [2021-05-02 14:27:11,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543003150] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:27:11,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:27:11,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 14:27:11,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041608365] [2021-05-02 14:27:11,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 14:27:11,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:27:11,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 14:27:11,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 14:27:11,070 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 14:27:11,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:27:11,152 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-05-02 14:27:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 14:27:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 14:27:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:27:11,155 INFO L225 Difference]: With dead ends: 35 [2021-05-02 14:27:11,155 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 14:27:11,156 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 14:27:11,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 14:27:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-05-02 14:27:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 14:27:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-05-02 14:27:11,166 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 14 [2021-05-02 14:27:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:27:11,166 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-05-02 14:27:11,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 14:27:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-05-02 14:27:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 14:27:11,168 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:27:11,168 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:27:11,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 14:27:11,170 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:27:11,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:27:11,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1209133518, now seen corresponding path program 1 times [2021-05-02 14:27:11,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:27:11,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798031177] [2021-05-02 14:27:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:27:11,196 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:27:11,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332455270] [2021-05-02 14:27:11,196 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 14:27:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:27:11,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 14:27:11,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:27:11,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:11,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:11,446 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 14:27:11,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:27:11,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798031177] [2021-05-02 14:27:11,447 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:27:11,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332455270] [2021-05-02 14:27:11,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332455270] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:27:11,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:27:11,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 14:27:11,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390946831] [2021-05-02 14:27:11,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 14:27:11,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:27:11,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 14:27:11,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-02 14:27:11,453 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 14:27:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:27:11,508 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-05-02 14:27:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 14:27:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 14:27:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:27:11,510 INFO L225 Difference]: With dead ends: 35 [2021-05-02 14:27:11,510 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 14:27:11,511 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-02 14:27:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 14:27:11,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 14:27:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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 14:27:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-05-02 14:27:11,522 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 15 [2021-05-02 14:27:11,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:27:11,522 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-05-02 14:27:11,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 14:27:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-05-02 14:27:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 14:27:11,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:27:11,523 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:27:11,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 14:27:11,737 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:27:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:27:11,738 INFO L82 PathProgramCache]: Analyzing trace with hash -352921097, now seen corresponding path program 1 times [2021-05-02 14:27:11,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:27:11,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671654727] [2021-05-02 14:27:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:27:11,767 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:27:11,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368709677] [2021-05-02 14:27:11,767 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 14:27:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:27:11,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 14:27:11,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:27:11,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:11,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 14:27:11,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:27:11,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671654727] [2021-05-02 14:27:11,923 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:27:11,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368709677] [2021-05-02 14:27:11,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368709677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:27:11,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:27:11,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 14:27:11,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945331064] [2021-05-02 14:27:11,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 14:27:11,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:27:11,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 14:27:11,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 14:27:11,924 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 14:27:11,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:27:11,981 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-05-02 14:27:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 14:27:11,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 14:27:11,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:27:11,982 INFO L225 Difference]: With dead ends: 44 [2021-05-02 14:27:11,983 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 14:27:11,984 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-02 14:27:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 14:27:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 14:27:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 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 14:27:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-05-02 14:27:11,988 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 17 [2021-05-02 14:27:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:27:11,989 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-05-02 14:27:11,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 14:27:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-05-02 14:27:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 14:27:11,989 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:27:11,990 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] [2021-05-02 14:27:12,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:27:12,201 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:27:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:27:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1626008211, now seen corresponding path program 1 times [2021-05-02 14:27:12,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:27:12,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918813870] [2021-05-02 14:27:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:27:12,210 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:27:12,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118243326] [2021-05-02 14:27:12,210 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 14:27:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:27:12,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 14:27:12,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:27:12,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:12,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:12,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:12,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:12,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:12,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:27:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 14:27:12,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:27:12,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918813870] [2021-05-02 14:27:12,312 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:27:12,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118243326] [2021-05-02 14:27:12,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118243326] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:27:12,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:27:12,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 14:27:12,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985740668] [2021-05-02 14:27:12,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 14:27:12,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:27:12,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 14:27:12,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 14:27:12,314 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 14:27:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:27:12,329 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-05-02 14:27:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 14:27:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-05-02 14:27:12,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:27:12,330 INFO L225 Difference]: With dead ends: 43 [2021-05-02 14:27:12,330 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 14:27:12,331 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-05-02 14:27:12,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 14:27:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 14:27:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 14:27:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 14:27:12,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-05-02 14:27:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:27:12,331 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 14:27:12,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 14:27:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 14:27:12,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 14:27:12,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:27:12,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 14:27:12,682 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 14:27:12,682 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 14:27:12,682 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 14:27:12,682 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~counter~0 |old(~counter~0)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (= ~counter~0 0) [2021-05-02 14:27:12,683 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 15 17) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 26 50) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point L48(line 48) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 26 50) no Hoare annotation was computed. [2021-05-02 14:27:12,683 INFO L198 CegarLoopUtils]: For program point L38(lines 38 47) no Hoare annotation was computed. [2021-05-02 14:27:12,684 INFO L194 CegarLoopUtils]: At program point L38-2(lines 38 47) the Hoare annotation is: (let ((.cse0 (= main_~q~0 0)) (.cse1 (= main_~A~0 main_~r~0))) (or (and (<= 1 (mod main_~r~0 4294967296)) .cse0 .cse1) (and .cse0 (= main_~b~0 1) .cse1) (not (= |old(~counter~0)| 0)))) [2021-05-02 14:27:12,684 INFO L198 CegarLoopUtils]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2021-05-02 14:27:12,684 INFO L194 CegarLoopUtils]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (= main_~q~0 0)) (.cse1 (= main_~A~0 main_~r~0))) (or (and (<= 1 (mod main_~r~0 4294967296)) (<= 1 ~counter~0) .cse0 .cse1) (and .cse0 (= main_~b~0 1) .cse1 (= ~counter~0 |old(~counter~0)|)) (not (= |old(~counter~0)| 0)))) [2021-05-02 14:27:12,684 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 26 50) the Hoare annotation is: (or (not (= |old(~counter~0)| 0)) (= ~counter~0 |old(~counter~0)|)) [2021-05-02 14:27:12,684 INFO L198 CegarLoopUtils]: For program point L43(lines 43 46) no Hoare annotation was computed. [2021-05-02 14:27:12,684 INFO L198 CegarLoopUtils]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2021-05-02 14:27:12,684 INFO L194 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (not (= |old(~counter~0)| 0)) [2021-05-02 14:27:12,684 INFO L198 CegarLoopUtils]: For program point L39-1(lines 38 47) no Hoare annotation was computed. [2021-05-02 14:27:12,684 INFO L198 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-05-02 14:27:12,684 INFO L198 CegarLoopUtils]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2021-05-02 14:27:12,684 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 18 24) the Hoare annotation is: true [2021-05-02 14:27:12,684 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2021-05-02 14:27:12,684 INFO L198 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-05-02 14:27:12,685 INFO L198 CegarLoopUtils]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-05-02 14:27:12,685 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-05-02 14:27:12,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 02:27:12 BoogieIcfgContainer [2021-05-02 14:27:12,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 14:27:12,695 INFO L168 Benchmark]: Toolchain (without parser) took 2584.36 ms. Allocated memory is still 178.3 MB. Free memory was 142.6 MB in the beginning and 71.8 MB in the end (delta: 70.8 MB). Peak memory consumption was 71.4 MB. Max. memory is 8.0 GB. [2021-05-02 14:27:12,696 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 178.3 MB. Free memory is still 158.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 14:27:12,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.38 ms. Allocated memory is still 178.3 MB. Free memory was 142.5 MB in the beginning and 161.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2021-05-02 14:27:12,696 INFO L168 Benchmark]: Boogie Preprocessor took 36.20 ms. Allocated memory is still 178.3 MB. Free memory was 161.3 MB in the beginning and 159.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 14:27:12,696 INFO L168 Benchmark]: RCFGBuilder took 328.85 ms. Allocated memory is still 178.3 MB. Free memory was 159.2 MB in the beginning and 142.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 14:27:12,696 INFO L168 Benchmark]: TraceAbstraction took 2020.23 ms. Allocated memory is still 178.3 MB. Free memory was 142.4 MB in the beginning and 71.8 MB in the end (delta: 70.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 8.0 GB. [2021-05-02 14:27:12,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 178.3 MB. Free memory is still 158.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 194.38 ms. Allocated memory is still 178.3 MB. Free memory was 142.5 MB in the beginning and 161.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.20 ms. Allocated memory is still 178.3 MB. Free memory was 161.3 MB in the beginning and 159.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 328.85 ms. Allocated memory is still 178.3 MB. Free memory was 159.2 MB in the beginning and 142.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2020.23 ms. Allocated memory is still 178.3 MB. Free memory was 142.4 MB in the beginning and 71.8 MB in the end (delta: 70.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1821.1ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 7.8ms, AutomataDifference: 294.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 130.8ms, InitialAbstractionConstructionTime: 7.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 108 SDtfs, 42 SDslu, 203 SDs, 0 SdLazy, 164 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 20 NumberOfFragments, 105 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 26.7ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 97.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 27.5ms SsaConstructionTime, 142.9ms SatisfiabilityAnalysisTime, 423.8ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 6 NumberOfNonLiveVariables, 316 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 4/6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((1 <= r % 4294967296 && 1 <= counter) && q == 0) && A == r) || (((q == 0 && b == 1) && A == r) && counter == \old(counter))) || !(\old(counter) == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...