/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/geo2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:22:15,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:22:15,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:22:15,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:22:15,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:22:15,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:22:15,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:22:15,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:22:15,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:22:15,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:22:15,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:22:15,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:22:15,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:22:15,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:22:15,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:22:15,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:22:15,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:22:15,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:22:15,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:22:15,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:22:15,269 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 15:22:15,298 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:22:15,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:22:15,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:22:15,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:22:15,300 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:22:15,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:22:15,301 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:22:15,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:22:15,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:22:15,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:22:15,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:22:15,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:22:15,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:22:15,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:22:15,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:22:15,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:22:15,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:22:15,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:22:15,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:22:15,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:22:15,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:22:15,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:22:15,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:22:15,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:22:15,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:22:15,588 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:22:15,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound1.c [2021-05-02 15:22:15,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93dee039a/57c103c2da124fd8877dd77a8d287267/FLAG6436419ce [2021-05-02 15:22:15,989 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:22:15,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound1.c [2021-05-02 15:22:15,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93dee039a/57c103c2da124fd8877dd77a8d287267/FLAG6436419ce [2021-05-02 15:22:16,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93dee039a/57c103c2da124fd8877dd77a8d287267 [2021-05-02 15:22:16,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:22:16,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:22:16,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:22:16,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:22:16,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:22:16,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc8c36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16, skipping insertion in model container [2021-05-02 15:22:16,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:22:16,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:22:16,113 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/geo2-ll_valuebound1.c[525,538] [2021-05-02 15:22:16,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:22:16,127 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:22:16,164 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/geo2-ll_valuebound1.c[525,538] [2021-05-02 15:22:16,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:22:16,183 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:22:16,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16 WrapperNode [2021-05-02 15:22:16,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:22:16,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:22:16,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:22:16,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:22:16,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (1/1) ... [2021-05-02 15:22:16,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:22:16,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:22:16,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:22:16,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:22:16,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (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 15:22:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:22:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:22:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:22:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:22:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:22:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:22:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:22:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:22:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:22:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:22:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:22:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:22:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:22:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:22:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:22:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:22:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:22:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:22:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:22:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:22:16,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:22:16,545 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 15:22:16,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:22:16 BoogieIcfgContainer [2021-05-02 15:22:16,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:22:16,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:22:16,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:22:16,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:22:16,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:22:16" (1/3) ... [2021-05-02 15:22:16,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64879fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:22:16, skipping insertion in model container [2021-05-02 15:22:16,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:22:16" (2/3) ... [2021-05-02 15:22:16,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64879fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:22:16, skipping insertion in model container [2021-05-02 15:22:16,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:22:16" (3/3) ... [2021-05-02 15:22:16,550 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound1.c [2021-05-02 15:22:16,570 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:22:16,573 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:22:16,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:22:16,615 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:22:16,615 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:22:16,615 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:22:16,616 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:22:16,616 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:22:16,616 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:22:16,616 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:22:16,616 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:22:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 15:22:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 15:22:16,635 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:22:16,636 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:22:16,636 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:22:16,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:22:16,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1276201559, now seen corresponding path program 1 times [2021-05-02 15:22:16,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:22:16,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537237819] [2021-05-02 15:22:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:22:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:22:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:16,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:22:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:22:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 15:22:16,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:22:16,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537237819] [2021-05-02 15:22:16,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537237819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:22:16,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:22:16,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:22:16,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910030025] [2021-05-02 15:22:16,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:22:16,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:22:16,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:22:16,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:22:16,909 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:22:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:22:16,999 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-05-02 15:22:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:22:17,001 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 15:22:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:22:17,005 INFO L225 Difference]: With dead ends: 51 [2021-05-02 15:22:17,005 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 15:22:17,007 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:22:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 15:22:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-02 15:22:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 15:22:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 15:22:17,055 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-02 15:22:17,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:22:17,055 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 15:22:17,060 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:22:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 15:22:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 15:22:17,061 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:22:17,062 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:22:17,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:22:17,062 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:22:17,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:22:17,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1874219407, now seen corresponding path program 1 times [2021-05-02 15:22:17,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:22:17,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958265801] [2021-05-02 15:22:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:22:17,101 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:22:17,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095828442] [2021-05-02 15:22:17,102 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 15:22:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:17,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 15:22:17,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:22:17,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 15:22:17,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:22:17,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958265801] [2021-05-02 15:22:17,412 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:22:17,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095828442] [2021-05-02 15:22:17,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095828442] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:22:17,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:22:17,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:22:17,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409008085] [2021-05-02 15:22:17,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:22:17,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:22:17,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:22:17,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:22:17,415 INFO L87 Difference]: Start difference. First operand 24 states and 26 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:22:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:22:17,521 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 15:22:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:22:17,522 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-02 15:22:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:22:17,523 INFO L225 Difference]: With dead ends: 34 [2021-05-02 15:22:17,523 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 15:22:17,524 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:22:17,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 15:22:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-02 15:22:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 15:22:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-05-02 15:22:17,536 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2021-05-02 15:22:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:22:17,537 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-05-02 15:22:17,537 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 15:22:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-05-02 15:22:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-02 15:22:17,538 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:22:17,538 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:22:17,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:22:17,739 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:22:17,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:22:17,740 INFO L82 PathProgramCache]: Analyzing trace with hash 156588053, now seen corresponding path program 1 times [2021-05-02 15:22:17,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:22:17,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973731173] [2021-05-02 15:22:17,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:22:17,749 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:22:17,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768840010] [2021-05-02 15:22:17,750 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 15:22:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:22:17,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 15:22:17,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:22:17,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:22:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 15:22:17,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:22:17,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973731173] [2021-05-02 15:22:17,946 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:22:17,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768840010] [2021-05-02 15:22:17,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768840010] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:22:17,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:22:17,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 15:22:17,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500193419] [2021-05-02 15:22:17,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 15:22:17,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:22:17,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 15:22:17,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-02 15:22:17,947 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 15:22:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:22:17,968 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-05-02 15:22:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 15:22:17,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2021-05-02 15:22:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:22:17,969 INFO L225 Difference]: With dead ends: 31 [2021-05-02 15:22:17,969 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:22:17,969 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-02 15:22:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:22:17,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:22:17,970 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 15:22:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:22:17,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-05-02 15:22:17,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:22:17,970 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:22:17,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 15:22:17,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:22:17,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:22:18,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:22:18,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:22:18,401 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2021-05-02 15:22:18,402 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2021-05-02 15:22:18,402 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2021-05-02 15:22:18,402 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:22:18,402 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 15:22:18,402 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:22:18,402 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:22:18,402 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 15:22:18,402 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:22:18,402 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:22:18,403 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-05-02 15:22:18,403 INFO L198 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-05-02 15:22:18,403 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:22:18,403 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-05-02 15:22:18,403 INFO L194 CegarLoopUtils]: At program point L35-2(lines 35 44) the Hoare annotation is: (and (<= 1 main_~c~0) (<= main_~k~0 1) (<= main_~z~0 1) (<= 0 main_~k~0) (= main_~y~0 1) (<= 0 main_~z~0) (= main_~x~0 1)) [2021-05-02 15:22:18,403 INFO L194 CegarLoopUtils]: At program point L35-3(lines 35 44) the Hoare annotation is: (and (<= main_~z~0 1) (= main_~y~0 1) (<= 0 main_~z~0) (= main_~x~0 1)) [2021-05-02 15:22:18,403 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 23 47) the Hoare annotation is: true [2021-05-02 15:22:18,403 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (<= main_~z~0 1) (<= 0 main_~z~0)) [2021-05-02 15:22:18,403 INFO L198 CegarLoopUtils]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-05-02 15:22:18,403 INFO L201 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-05-02 15:22:18,403 INFO L198 CegarLoopUtils]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-05-02 15:22:18,403 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 23 47) no Hoare annotation was computed. [2021-05-02 15:22:18,403 INFO L198 CegarLoopUtils]: For program point L45(line 45) no Hoare annotation was computed. [2021-05-02 15:22:18,404 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 23 47) no Hoare annotation was computed. [2021-05-02 15:22:18,404 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~c~0) (<= main_~k~0 1) (<= main_~z~0 1) (<= 0 main_~k~0) (= main_~y~0 1) (<= 0 main_~z~0) (= main_~x~0 1)) [2021-05-02 15:22:18,404 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 44) no Hoare annotation was computed. [2021-05-02 15:22:18,404 INFO L198 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-05-02 15:22:18,404 INFO L198 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-05-02 15:22:18,404 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-05-02 15:22:18,404 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-05-02 15:22:18,404 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-05-02 15:22:18,404 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-05-02 15:22:18,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:22:18 BoogieIcfgContainer [2021-05-02 15:22:18,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:22:18,414 INFO L168 Benchmark]: Toolchain (without parser) took 2407.22 ms. Allocated memory was 194.0 MB in the beginning and 248.5 MB in the end (delta: 54.5 MB). Free memory was 157.5 MB in the beginning and 193.8 MB in the end (delta: -36.3 MB). Peak memory consumption was 57.4 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:18,414 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 194.0 MB. Free memory is still 173.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:22:18,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.34 ms. Allocated memory is still 194.0 MB. Free memory was 157.3 MB in the beginning and 176.1 MB in the end (delta: -18.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:18,414 INFO L168 Benchmark]: Boogie Preprocessor took 64.24 ms. Allocated memory is still 194.0 MB. Free memory was 176.1 MB in the beginning and 174.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:18,415 INFO L168 Benchmark]: RCFGBuilder took 296.39 ms. Allocated memory is still 194.0 MB. Free memory was 174.5 MB in the beginning and 160.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:18,415 INFO L168 Benchmark]: TraceAbstraction took 1866.66 ms. Allocated memory was 194.0 MB in the beginning and 248.5 MB in the end (delta: 54.5 MB). Free memory was 159.8 MB in the beginning and 193.8 MB in the end (delta: -34.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. [2021-05-02 15:22:18,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 194.0 MB. Free memory is still 173.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 176.34 ms. Allocated memory is still 194.0 MB. Free memory was 157.3 MB in the beginning and 176.1 MB in the end (delta: -18.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.24 ms. Allocated memory is still 194.0 MB. Free memory was 176.1 MB in the beginning and 174.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 296.39 ms. Allocated memory is still 194.0 MB. Free memory was 174.5 MB in the beginning and 160.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1866.66 ms. Allocated memory was 194.0 MB in the beginning and 248.5 MB in the end (delta: 54.5 MB). Free memory was 159.8 MB in the beginning and 193.8 MB in the end (delta: -34.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1574.6ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 8.1ms, AutomataDifference: 253.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 213.0ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 64 SDtfs, 33 SDslu, 145 SDs, 0 SdLazy, 76 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 126.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 18 PreInvPairs, 22 NumberOfFragments, 101 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 74.9ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 131.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 32.8ms SsaConstructionTime, 83.1ms SatisfiabilityAnalysisTime, 428.0ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 4 NumberOfNonLiveVariables, 247 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 13/16 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: 35]: Loop Invariant Derived loop invariant: (((((1 <= c && k <= 1) && z <= 1) && 0 <= k) && y == 1) && 0 <= z) && x == 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...