/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/geo1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:21:17,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:21:17,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:21:17,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:21:17,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:21:17,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:21:17,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:21:17,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:21:17,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:21:17,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:21:17,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:21:17,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:21:17,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:21:17,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:21:17,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:21:17,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:21:17,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:21:17,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:21:17,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:21:17,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:21:17,571 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 15:21:17,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:21:17,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:21:17,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:21:17,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:21:17,603 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:21:17,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:21:17,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:21:17,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:21:17,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:21:17,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:21:17,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:21:17,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:21:17,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:21:17,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:21:17,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:21:17,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:21:17,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:21:17,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:21:17,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:21:17,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:21:17,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:21:17,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:21:17,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:21:17,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:21:17,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:21:17,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:21:17,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:21:17,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:21:17,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:21:17,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:21:17,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:21:17,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:21:17,847 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:21:17,848 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:21:17,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c [2021-05-02 15:21:17,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0860a9e/2bfe1ee736434cbc941a1e87f4d8e9f7/FLAGa052fdfcc [2021-05-02 15:21:18,216 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:21:18,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound5.c [2021-05-02 15:21:18,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0860a9e/2bfe1ee736434cbc941a1e87f4d8e9f7/FLAGa052fdfcc [2021-05-02 15:21:18,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0860a9e/2bfe1ee736434cbc941a1e87f4d8e9f7 [2021-05-02 15:21:18,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:21:18,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:21:18,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:21:18,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:21:18,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:21:18,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5e663e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18, skipping insertion in model container [2021-05-02 15:21:18,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:21:18,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:21:18,382 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/geo1-ll_valuebound5.c[546,559] [2021-05-02 15:21:18,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:21:18,399 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:21:18,438 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/geo1-ll_valuebound5.c[546,559] [2021-05-02 15:21:18,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:21:18,462 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:21:18,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18 WrapperNode [2021-05-02 15:21:18,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:21:18,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:21:18,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:21:18,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:21:18,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (1/1) ... [2021-05-02 15:21:18,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:21:18,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:21:18,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:21:18,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:21:18,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (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 15:21:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:21:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:21:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:21:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:21:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:21:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:21:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:21:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:21:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:21:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:21:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:21:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:21:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:21:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:21:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:21:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:21:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:21:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:21:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:21:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:21:18,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:21:18,783 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 15:21:18,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:21:18 BoogieIcfgContainer [2021-05-02 15:21:18,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:21:18,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:21:18,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:21:18,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:21:18,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:21:18" (1/3) ... [2021-05-02 15:21:18,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76820882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:21:18, skipping insertion in model container [2021-05-02 15:21:18,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:18" (2/3) ... [2021-05-02 15:21:18,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76820882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:21:18, skipping insertion in model container [2021-05-02 15:21:18,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:21:18" (3/3) ... [2021-05-02 15:21:18,805 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.c [2021-05-02 15:21:18,809 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:21:18,811 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:21:18,831 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:21:18,846 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:21:18,846 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:21:18,846 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:21:18,846 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:21:18,846 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:21:18,846 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:21:18,846 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:21:18,846 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:21:18,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 15:21:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:21:18,863 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:21:18,864 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:21:18,864 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:21:18,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:21:18,868 INFO L82 PathProgramCache]: Analyzing trace with hash 774216096, now seen corresponding path program 1 times [2021-05-02 15:21:18,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:21:18,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775456120] [2021-05-02 15:21:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:21:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:19,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:21:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:19,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:21:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:21:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 15:21:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 15:21:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 15:21:19,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:21:19,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775456120] [2021-05-02 15:21:19,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775456120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:21:19,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:21:19,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:21:19,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624439604] [2021-05-02 15:21:19,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:21:19,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:21:19,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:21:19,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:21:19,119 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:21:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:21:19,201 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2021-05-02 15:21:19,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:21:19,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 15:21:19,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:21:19,210 INFO L225 Difference]: With dead ends: 57 [2021-05-02 15:21:19,210 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 15:21:19,212 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:21:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 15:21:19,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 15:21:19,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 15:21:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-02 15:21:19,246 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2021-05-02 15:21:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:21:19,246 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-02 15:21:19,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:21:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-02 15:21:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:21:19,248 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:21:19,248 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:21:19,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:21:19,248 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:21:19,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:21:19,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1105237916, now seen corresponding path program 1 times [2021-05-02 15:21:19,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:21:19,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402216755] [2021-05-02 15:21:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:21:19,267 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:21:19,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5000359] [2021-05-02 15:21:19,267 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 15:21:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:19,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 15:21:19,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:21:19,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:19,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:19,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:19,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:19,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:19,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:19,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:19,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:21:19,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:21:19,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402216755] [2021-05-02 15:21:19,554 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:21:19,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5000359] [2021-05-02 15:21:19,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5000359] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:21:19,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:21:19,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:21:19,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400238220] [2021-05-02 15:21:19,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:21:19,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:21:19,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:21:19,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:21:19,556 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:21:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:21:19,662 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-05-02 15:21:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:21:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 15:21:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:21:19,667 INFO L225 Difference]: With dead ends: 37 [2021-05-02 15:21:19,667 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 15:21:19,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:21:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 15:21:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 15:21:19,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 15:21:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-05-02 15:21:19,688 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2021-05-02 15:21:19,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:21:19,689 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-05-02 15:21:19,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:21:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-05-02 15:21:19,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 15:21:19,690 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:21:19,690 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:21:19,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:21:19,891 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:21:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:21:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1493430927, now seen corresponding path program 1 times [2021-05-02 15:21:19,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:21:19,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907100395] [2021-05-02 15:21:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:21:19,905 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:21:19,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171182305] [2021-05-02 15:21:19,905 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 15:21:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:19,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 15:21:19,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:21:20,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:21:20,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:21:20,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907100395] [2021-05-02 15:21:20,221 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:21:20,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171182305] [2021-05-02 15:21:20,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171182305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:21:20,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:21:20,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 15:21:20,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899466872] [2021-05-02 15:21:20,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 15:21:20,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:21:20,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 15:21:20,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-05-02 15:21:20,223 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 15:21:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:21:20,347 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-05-02 15:21:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 15:21:20,347 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2021-05-02 15:21:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:21:20,348 INFO L225 Difference]: With dead ends: 33 [2021-05-02 15:21:20,348 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:21:20,348 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 15:21:20,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:21:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:21:20,349 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 15:21:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:21:20,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-05-02 15:21:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:21:20,349 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:21:20,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 15:21:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:21:20,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:21:20,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:21:20,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:21:20,780 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2021-05-02 15:21:20,780 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2021-05-02 15:21:20,780 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2021-05-02 15:21:20,780 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:21:20,780 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 15:21:20,781 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:21:20,781 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:21:20,781 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 15:21:20,781 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:21:20,781 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:21:20,781 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2021-05-02 15:21:20,781 INFO L198 CegarLoopUtils]: For program point L13(line 13) no Hoare annotation was computed. [2021-05-02 15:21:20,781 INFO L198 CegarLoopUtils]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2021-05-02 15:21:20,781 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2021-05-02 15:21:20,782 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= main_~z~0 5) (<= 0 main_~z~0)) [2021-05-02 15:21:20,782 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 22 52) no Hoare annotation was computed. [2021-05-02 15:21:20,782 INFO L194 CegarLoopUtils]: At program point L50(line 50) the Hoare annotation is: (and (<= main_~z~0 5) (exists ((v_main_~x~0_11 Int) (main_~z~0 Int)) (let ((.cse0 (* v_main_~x~0_11 main_~z~0))) (and (<= main_~z~0 5) (<= 0 main_~z~0) (= .cse0 (+ v_main_~x~0_11 main_~x~0)) (= (+ .cse0 1) (+ v_main_~x~0_11 main_~y~0))))) (<= 0 main_~z~0)) [2021-05-02 15:21:20,782 INFO L198 CegarLoopUtils]: For program point L50-1(line 50) no Hoare annotation was computed. [2021-05-02 15:21:20,782 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 22 52) no Hoare annotation was computed. [2021-05-02 15:21:20,783 INFO L194 CegarLoopUtils]: At program point L36-2(lines 36 46) the Hoare annotation is: (and (<= main_~z~0 5) (= (+ (* main_~x~0 main_~z~0) 1) (+ main_~x~0 main_~y~0)) (<= 0 main_~z~0)) [2021-05-02 15:21:20,783 INFO L198 CegarLoopUtils]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2021-05-02 15:21:20,783 INFO L198 CegarLoopUtils]: For program point L30(line 30) no Hoare annotation was computed. [2021-05-02 15:21:20,783 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 22 52) the Hoare annotation is: true [2021-05-02 15:21:20,783 INFO L194 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~z~0 5) (<= 0 main_~z~0)) [2021-05-02 15:21:20,783 INFO L194 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (and (<= main_~z~0 5) (<= 0 main_~z~0)) [2021-05-02 15:21:20,783 INFO L201 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-05-02 15:21:20,783 INFO L198 CegarLoopUtils]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-05-02 15:21:20,784 INFO L194 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (<= main_~z~0 5) (= (+ (* main_~x~0 main_~z~0) 1) (+ main_~x~0 main_~y~0)) (<= 0 main_~z~0)) [2021-05-02 15:21:20,784 INFO L198 CegarLoopUtils]: For program point L37-1(lines 36 46) no Hoare annotation was computed. [2021-05-02 15:21:20,784 INFO L198 CegarLoopUtils]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-05-02 15:21:20,784 INFO L198 CegarLoopUtils]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-05-02 15:21:20,784 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2021-05-02 15:21:20,784 INFO L198 CegarLoopUtils]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2021-05-02 15:21:20,784 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2021-05-02 15:21:20,784 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-05-02 15:21:20,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:21:20 BoogieIcfgContainer [2021-05-02 15:21:20,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:21:20,804 INFO L168 Benchmark]: Toolchain (without parser) took 2571.47 ms. Allocated memory is still 188.7 MB. Free memory was 152.8 MB in the beginning and 67.7 MB in the end (delta: 85.1 MB). Peak memory consumption was 86.5 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:20,806 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 188.7 MB. Free memory is still 169.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:21:20,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.96 ms. Allocated memory is still 188.7 MB. Free memory was 152.5 MB in the beginning and 171.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:20,808 INFO L168 Benchmark]: Boogie Preprocessor took 33.09 ms. Allocated memory is still 188.7 MB. Free memory was 171.3 MB in the beginning and 169.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:20,808 INFO L168 Benchmark]: RCFGBuilder took 286.57 ms. Allocated memory is still 188.7 MB. Free memory was 169.7 MB in the beginning and 154.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:20,808 INFO L168 Benchmark]: TraceAbstraction took 2017.38 ms. Allocated memory is still 188.7 MB. Free memory was 154.0 MB in the beginning and 67.7 MB in the end (delta: 86.3 MB). Peak memory consumption was 86.3 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:20,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 188.7 MB. Free memory is still 169.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 230.96 ms. Allocated memory is still 188.7 MB. Free memory was 152.5 MB in the beginning and 171.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.09 ms. Allocated memory is still 188.7 MB. Free memory was 171.3 MB in the beginning and 169.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 286.57 ms. Allocated memory is still 188.7 MB. Free memory was 169.7 MB in the beginning and 154.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2017.38 ms. Allocated memory is still 188.7 MB. Free memory was 154.0 MB in the beginning and 67.7 MB in the end (delta: 86.3 MB). Peak memory consumption was 86.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1720.0ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 10.7ms, AutomataDifference: 339.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 215.5ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 44 SDslu, 195 SDs, 0 SdLazy, 173 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 181.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 193.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 23 PreInvPairs, 31 NumberOfFragments, 121 HoareAnnotationTreeSize, 23 FomulaSimplifications, 106 FormulaSimplificationTreeSizeReduction, 77.4ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 308 FormulaSimplificationTreeSizeReductionInter, 115.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 44.6ms SsaConstructionTime, 91.1ms SatisfiabilityAnalysisTime, 616.2ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 103 ConstructedInterpolants, 1 QuantifiedInterpolants, 314 SizeOfPredicates, 6 NumberOfNonLiveVariables, 278 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 55/74 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: 36]: Loop Invariant Derived loop invariant: (z <= 5 && x * z + 1 == x + y) && 0 <= z RESULT: Ultimate proved your program to be correct! Received shutdown request...