/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_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:21:22,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:21:22,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:21:22,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:21:22,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:21:22,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:21:22,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:21:22,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:21:22,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:21:22,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:21:22,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:21:22,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:21:22,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:21:22,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:21:22,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:21:22,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:21:22,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:21:22,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:21:22,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:21:22,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:21:22,598 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 15:21:22,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:21:22,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:21:22,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:21:22,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:21:22,629 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:21:22,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:21:22,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:21:22,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:21:22,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:21:22,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:21:22,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:21:22,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:21:22,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:21:22,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:21:22,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:21:22,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:21:22,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:21:22,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:21:22,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:21:22,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:21:22,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:21:22,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:21:22,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:21:22,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:21:22,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:21:22,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:21:22,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:21:22,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:21:22,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:21:22,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:21:22,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:21:22,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:21:22,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:21:22,982 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:21:22,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound50.c [2021-05-02 15:21:23,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f6ce225/7046155b430046cfb85d4445c8af11d4/FLAG9a29938ae [2021-05-02 15:21:23,361 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:21:23,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound50.c [2021-05-02 15:21:23,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f6ce225/7046155b430046cfb85d4445c8af11d4/FLAG9a29938ae [2021-05-02 15:21:23,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2f6ce225/7046155b430046cfb85d4445c8af11d4 [2021-05-02 15:21:23,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:21:23,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:21:23,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:21:23,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:21:23,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:21:23,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:21:23" (1/1) ... [2021-05-02 15:21:23,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f96fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:23, skipping insertion in model container [2021-05-02 15:21:23,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:21:23" (1/1) ... [2021-05-02 15:21:23,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:21:23,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:21:23,923 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_valuebound50.c[546,559] [2021-05-02 15:21:23,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:21:23,935 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:21:23,983 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_valuebound50.c[546,559] [2021-05-02 15:21:23,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:21:24,007 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:21:24,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24 WrapperNode [2021-05-02 15:21:24,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:21:24,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:21:24,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:21:24,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:21:24,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (1/1) ... [2021-05-02 15:21:24,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (1/1) ... [2021-05-02 15:21:24,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (1/1) ... [2021-05-02 15:21:24,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (1/1) ... [2021-05-02 15:21:24,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (1/1) ... [2021-05-02 15:21:24,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (1/1) ... [2021-05-02 15:21:24,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (1/1) ... [2021-05-02 15:21:24,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:21:24,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:21:24,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:21:24,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:21:24,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (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 15:21:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:21:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:21:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:21:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:21:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:21:24,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:21:24,107 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:21:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:21:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:21:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:21:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:21:24,108 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:21:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:21:24,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:21:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:21:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:21:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:21:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:21:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:21:24,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:21:24,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:21:24,301 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 15:21:24,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:21:24 BoogieIcfgContainer [2021-05-02 15:21:24,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:21:24,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:21:24,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:21:24,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:21:24,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:21:23" (1/3) ... [2021-05-02 15:21:24,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a4fb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:21:24, skipping insertion in model container [2021-05-02 15:21:24,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:21:24" (2/3) ... [2021-05-02 15:21:24,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a4fb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:21:24, skipping insertion in model container [2021-05-02 15:21:24,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:21:24" (3/3) ... [2021-05-02 15:21:24,306 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound50.c [2021-05-02 15:21:24,309 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:21:24,311 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:21:24,335 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:21:24,348 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:21:24,349 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:21:24,349 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:21:24,349 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:21:24,349 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:21:24,349 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:21:24,349 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:21:24,349 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:21:24,358 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 15:21:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:21:24,366 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:21:24,367 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 15:21:24,367 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:21:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:21:24,370 INFO L82 PathProgramCache]: Analyzing trace with hash 774216096, now seen corresponding path program 1 times [2021-05-02 15:21:24,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:21:24,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870984244] [2021-05-02 15:21:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:21:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:21:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:21:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:21:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:24,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 15:21:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:24,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 15:21:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:24,587 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 15:21:24,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:21:24,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870984244] [2021-05-02 15:21:24,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870984244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:21:24,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:21:24,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:21:24,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282244957] [2021-05-02 15:21:24,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:21:24,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:21:24,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:21:24,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:21:24,603 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 15:21:24,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:21:24,697 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2021-05-02 15:21:24,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:21:24,698 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 15:21:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:21:24,705 INFO L225 Difference]: With dead ends: 57 [2021-05-02 15:21:24,705 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 15:21:24,707 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:21:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 15:21:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 15:21:24,739 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 15:21:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-02 15:21:24,742 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2021-05-02 15:21:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:21:24,742 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-02 15:21:24,742 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 15:21:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-02 15:21:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:21:24,743 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:21:24,744 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 15:21:24,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:21:24,745 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:21:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:21:24,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1105237916, now seen corresponding path program 1 times [2021-05-02 15:21:24,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:21:24,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977597024] [2021-05-02 15:21:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:21:24,776 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:21:24,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258071584] [2021-05-02 15:21:24,776 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 15:21:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:24,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 15:21:24,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:21:24,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:24,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:24,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:24,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:24,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:24,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,076 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 15:21:25,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:21:25,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977597024] [2021-05-02 15:21:25,077 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:21:25,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258071584] [2021-05-02 15:21:25,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258071584] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:21:25,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:21:25,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:21:25,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964533812] [2021-05-02 15:21:25,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:21:25,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:21:25,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:21:25,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:21:25,079 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 15:21:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:21:25,178 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-05-02 15:21:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:21:25,179 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 15:21:25,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:21:25,180 INFO L225 Difference]: With dead ends: 37 [2021-05-02 15:21:25,180 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 15:21:25,180 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:21:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 15:21:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 15:21:25,185 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 15:21:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-05-02 15:21:25,186 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2021-05-02 15:21:25,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:21:25,187 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-05-02 15:21:25,187 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 15:21:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-05-02 15:21:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 15:21:25,188 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:21:25,188 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 15:21:25,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:21:25,401 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:21:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:21:25,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1493430927, now seen corresponding path program 1 times [2021-05-02 15:21:25,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:21:25,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117360389] [2021-05-02 15:21:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:21:25,420 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:21:25,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316107512] [2021-05-02 15:21:25,421 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 15:21:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:21:25,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 15:21:25,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:21:25,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:21:25,711 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 15:21:25,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:21:25,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117360389] [2021-05-02 15:21:25,711 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:21:25,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316107512] [2021-05-02 15:21:25,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316107512] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:21:25,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:21:25,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 15:21:25,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630851345] [2021-05-02 15:21:25,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 15:21:25,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:21:25,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 15:21:25,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-05-02 15:21:25,714 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 15:21:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:21:25,823 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-05-02 15:21:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 15:21:25,823 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 15:21:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:21:25,824 INFO L225 Difference]: With dead ends: 33 [2021-05-02 15:21:25,824 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:21:25,824 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 15:21:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:21:25,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:21:25,825 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 15:21:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:21:25,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-05-02 15:21:25,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:21:25,825 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:21:25,825 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 15:21:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:21:25,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:21:26,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:21:26,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:21:26,244 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2021-05-02 15:21:26,244 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2021-05-02 15:21:26,244 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2021-05-02 15:21:26,244 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:21:26,245 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 15:21:26,245 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:21:26,245 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:21:26,245 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 15:21:26,245 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:21:26,245 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:21:26,245 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2021-05-02 15:21:26,245 INFO L198 CegarLoopUtils]: For program point L13(line 13) no Hoare annotation was computed. [2021-05-02 15:21:26,245 INFO L198 CegarLoopUtils]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2021-05-02 15:21:26,245 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2021-05-02 15:21:26,245 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= 0 main_~z~0) (<= main_~z~0 50)) [2021-05-02 15:21:26,245 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 22 52) no Hoare annotation was computed. [2021-05-02 15:21:26,245 INFO L194 CegarLoopUtils]: At program point L50(line 50) the Hoare annotation is: (and (exists ((v_main_~x~0_11 Int) (main_~z~0 Int)) (let ((.cse0 (* v_main_~x~0_11 main_~z~0))) (and (<= 0 main_~z~0) (= .cse0 (+ v_main_~x~0_11 main_~x~0)) (<= main_~z~0 50) (= (+ .cse0 1) (+ v_main_~x~0_11 main_~y~0))))) (<= 0 main_~z~0) (<= main_~z~0 50)) [2021-05-02 15:21:26,246 INFO L198 CegarLoopUtils]: For program point L50-1(line 50) no Hoare annotation was computed. [2021-05-02 15:21:26,246 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 22 52) no Hoare annotation was computed. [2021-05-02 15:21:26,246 INFO L194 CegarLoopUtils]: At program point L36-2(lines 36 46) the Hoare annotation is: (and (= (+ (* main_~x~0 main_~z~0) 1) (+ main_~x~0 main_~y~0)) (<= 0 main_~z~0) (<= main_~z~0 50)) [2021-05-02 15:21:26,246 INFO L198 CegarLoopUtils]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2021-05-02 15:21:26,246 INFO L198 CegarLoopUtils]: For program point L30(line 30) no Hoare annotation was computed. [2021-05-02 15:21:26,246 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 22 52) the Hoare annotation is: true [2021-05-02 15:21:26,246 INFO L194 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (<= 0 main_~z~0) (<= main_~z~0 50)) [2021-05-02 15:21:26,246 INFO L194 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (and (<= 0 main_~z~0) (<= main_~z~0 50)) [2021-05-02 15:21:26,246 INFO L201 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-05-02 15:21:26,246 INFO L198 CegarLoopUtils]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-05-02 15:21:26,246 INFO L194 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (= (+ (* main_~x~0 main_~z~0) 1) (+ main_~x~0 main_~y~0)) (<= 0 main_~z~0) (<= main_~z~0 50)) [2021-05-02 15:21:26,246 INFO L198 CegarLoopUtils]: For program point L37-1(lines 36 46) no Hoare annotation was computed. [2021-05-02 15:21:26,246 INFO L198 CegarLoopUtils]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-05-02 15:21:26,246 INFO L198 CegarLoopUtils]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-05-02 15:21:26,247 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2021-05-02 15:21:26,247 INFO L198 CegarLoopUtils]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2021-05-02 15:21:26,247 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2021-05-02 15:21:26,247 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-05-02 15:21:26,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:21:26 BoogieIcfgContainer [2021-05-02 15:21:26,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:21:26,256 INFO L168 Benchmark]: Toolchain (without parser) took 2455.11 ms. Allocated memory is still 202.4 MB. Free memory was 166.0 MB in the beginning and 88.7 MB in the end (delta: 77.3 MB). Peak memory consumption was 78.4 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:26,256 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 202.4 MB. Free memory is still 182.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:21:26,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.02 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 184.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:26,257 INFO L168 Benchmark]: Boogie Preprocessor took 33.74 ms. Allocated memory is still 202.4 MB. Free memory was 184.3 MB in the beginning and 182.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:26,257 INFO L168 Benchmark]: RCFGBuilder took 259.23 ms. Allocated memory is still 202.4 MB. Free memory was 182.4 MB in the beginning and 167.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:26,257 INFO L168 Benchmark]: TraceAbstraction took 1952.96 ms. Allocated memory is still 202.4 MB. Free memory was 167.0 MB in the beginning and 88.7 MB in the end (delta: 78.4 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. [2021-05-02 15:21:26,257 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 202.4 MB. Free memory is still 182.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 204.02 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 184.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.74 ms. Allocated memory is still 202.4 MB. Free memory was 184.3 MB in the beginning and 182.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 259.23 ms. Allocated memory is still 202.4 MB. Free memory was 182.4 MB in the beginning and 167.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1952.96 ms. Allocated memory is still 202.4 MB. Free memory was 167.0 MB in the beginning and 88.7 MB in the end (delta: 78.4 MB). Peak memory consumption was 78.9 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: 1696.1ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 12.4ms, AutomataDifference: 327.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 200.5ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 44 SDslu, 195 SDs, 0 SdLazy, 173 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 158.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 191.9ms 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: 31.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 23 PreInvPairs, 31 NumberOfFragments, 121 HoareAnnotationTreeSize, 23 FomulaSimplifications, 106 FormulaSimplificationTreeSizeReduction, 55.5ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 308 FormulaSimplificationTreeSizeReductionInter, 135.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 21.1ms SsaConstructionTime, 72.4ms SatisfiabilityAnalysisTime, 624.3ms 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: (x * z + 1 == x + y && 0 <= z) && z <= 50 RESULT: Ultimate proved your program to be correct! Received shutdown request...