/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/fermat2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:16:20,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:16:20,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:16:20,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:16:20,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:16:20,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:16:20,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:16:20,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:16:20,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:16:20,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:16:20,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:16:20,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:16:20,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:16:20,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:16:20,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:16:20,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:16:20,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:16:20,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:16:20,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:16:20,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:16:20,624 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 15:16:20,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:16:20,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:16:20,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:16:20,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:16:20,657 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:16:20,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:16:20,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:16:20,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:16:20,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:16:20,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:16:20,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:16:20,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:16:20,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:16:20,658 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:16:20,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:16:20,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:16:20,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:16:20,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:16:20,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:16:20,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:16:20,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:16:20,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:16:20,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:16:20,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:16:20,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:16:20,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:16:20,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:16:20,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:16:20,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:16:20,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:16:20,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:16:20,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:16:20,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:16:20,936 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:16:20,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c [2021-05-02 15:16:20,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d708f94/1a33cf88ac47469398dec453f3136e97/FLAGd1dd6bbfd [2021-05-02 15:16:21,327 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:16:21,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c [2021-05-02 15:16:21,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d708f94/1a33cf88ac47469398dec453f3136e97/FLAGd1dd6bbfd [2021-05-02 15:16:21,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d708f94/1a33cf88ac47469398dec453f3136e97 [2021-05-02 15:16:21,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:16:21,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:16:21,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:16:21,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:16:21,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:16:21,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299a0361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21, skipping insertion in model container [2021-05-02 15:16:21,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:16:21,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:16:21,444 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/fermat2-ll_valuebound2.c[524,537] [2021-05-02 15:16:21,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:16:21,466 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:16:21,480 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/fermat2-ll_valuebound2.c[524,537] [2021-05-02 15:16:21,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:16:21,506 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:16:21,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21 WrapperNode [2021-05-02 15:16:21,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:16:21,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:16:21,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:16:21,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:16:21,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (1/1) ... [2021-05-02 15:16:21,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:16:21,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:16:21,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:16:21,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:16:21,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (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 15:16:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:16:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:16:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:16:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:16:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:16:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:16:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:16:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:16:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:16:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:16:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:16:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:16:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:16:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:16:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:16:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:16:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:16:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:16:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:16:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:16:21,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:16:21,797 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 15:16:21,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:16:21 BoogieIcfgContainer [2021-05-02 15:16:21,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:16:21,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:16:21,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:16:21,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:16:21,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:16:21" (1/3) ... [2021-05-02 15:16:21,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4037d03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:16:21, skipping insertion in model container [2021-05-02 15:16:21,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:16:21" (2/3) ... [2021-05-02 15:16:21,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4037d03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:16:21, skipping insertion in model container [2021-05-02 15:16:21,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:16:21" (3/3) ... [2021-05-02 15:16:21,803 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound2.c [2021-05-02 15:16:21,823 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:16:21,825 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:16:21,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:16:21,859 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:16:21,859 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:16:21,859 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:16:21,859 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:16:21,859 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:16:21,859 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:16:21,859 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:16:21,859 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:16:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 15:16:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:16:21,876 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:21,876 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 15:16:21,877 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1790211013, now seen corresponding path program 1 times [2021-05-02 15:16:21,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:21,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111145173] [2021-05-02 15:16:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:22,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:16:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:16:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:16:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:22,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 15:16:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:22,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 15:16:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:22,123 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 15:16:22,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:16:22,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111145173] [2021-05-02 15:16:22,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111145173] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:16:22,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:16:22,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:16:22,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751213685] [2021-05-02 15:16:22,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:16:22,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:16:22,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:16:22,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:16:22,137 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 15:16:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:16:22,196 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2021-05-02 15:16:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:16:22,198 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 15:16:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:16:22,202 INFO L225 Difference]: With dead ends: 57 [2021-05-02 15:16:22,203 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 15:16:22,204 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:16:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 15:16:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 15:16:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 15:16:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-05-02 15:16:22,229 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2021-05-02 15:16:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:16:22,229 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-05-02 15:16:22,229 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 15:16:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-05-02 15:16:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:16:22,230 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:16:22,230 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 15:16:22,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:16:22,231 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:16:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:16:22,231 INFO L82 PathProgramCache]: Analyzing trace with hash -102231875, now seen corresponding path program 1 times [2021-05-02 15:16:22,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:16:22,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558132033] [2021-05-02 15:16:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:16:22,243 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:16:22,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071631536] [2021-05-02 15:16:22,243 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 15:16:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:16:22,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 15:16:22,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:16:22,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:22,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:22,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:22,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:22,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:22,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:22,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:22,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:41,305 WARN L205 SmtUtils]: Spent 18.80 s on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-05-02 15:16:41,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:41,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:16:41,445 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 15:16:41,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:16:41,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558132033] [2021-05-02 15:16:41,446 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:16:41,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071631536] [2021-05-02 15:16:41,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071631536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:16:41,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:16:41,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-02 15:16:41,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568988837] [2021-05-02 15:16:41,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 15:16:41,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:16:41,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 15:16:41,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 15:16:41,448 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 15:16:47,041 WARN L205 SmtUtils]: Spent 5.55 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 15:16:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:16:47,069 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-05-02 15:16:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 15:16:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 33 [2021-05-02 15:16:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:16:47,070 INFO L225 Difference]: With dead ends: 35 [2021-05-02 15:16:47,070 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:16:47,071 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 24464.2ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-05-02 15:16:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:16:47,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:16:47,072 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 15:16:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:16:47,072 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-05-02 15:16:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:16:47,072 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:16:47,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 15:16:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:16:47,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:16:47,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:16:47,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:17:02,027 WARN L205 SmtUtils]: Spent 14.70 s on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2021-05-02 15:17:39,676 WARN L205 SmtUtils]: Spent 37.59 s on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2021-05-02 15:18:10,962 WARN L205 SmtUtils]: Spent 31.29 s on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2021-05-02 15:18:11,006 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-02 15:18:11,006 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-02 15:18:11,006 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-02 15:18:11,006 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:18:11,006 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 15:18:11,006 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:18:11,007 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:18:11,007 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 15:18:11,007 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:18:11,007 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:18:11,007 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-02 15:18:11,007 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-02 15:18:11,007 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-02 15:18:11,007 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-02 15:18:11,007 INFO L194 CegarLoopUtils]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (div (+ main_~u~0 (- 1)) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ main_~A~0 main_~r~0) .cse0) (<= 0 main_~A~0) (< (+ .cse0 1) (+ main_~A~0 (* 2 .cse1))) (<= main_~A~0 2) (= main_~v~0 1) (= (mod main_~A~0 2) 1) (= (mod (+ main_~u~0 1) 2) 0)))) [2021-05-02 15:18:11,007 INFO L198 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-05-02 15:18:11,007 INFO L194 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (<= main_~A~0 2)) [2021-05-02 15:18:11,007 INFO L194 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~A~0) (<= main_~A~0 2)) [2021-05-02 15:18:11,007 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 51) no Hoare annotation was computed. [2021-05-02 15:18:11,008 INFO L194 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 0 main_~A~0) (<= main_~A~0 2) (<= main_~R~0 2) (<= 0 main_~R~0)) [2021-05-02 15:18:11,008 INFO L201 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-05-02 15:18:11,008 INFO L198 CegarLoopUtils]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-05-02 15:18:11,008 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 51) no Hoare annotation was computed. [2021-05-02 15:18:11,008 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (div (+ main_~u~0 (- 1)) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ main_~A~0 main_~r~0) .cse0) (<= 0 main_~A~0) (< (+ .cse0 1) (+ main_~A~0 (* 2 .cse1))) (<= main_~A~0 2) (= main_~v~0 1) (= (mod main_~A~0 2) 1) (= (mod (+ main_~u~0 1) 2) 0)))) [2021-05-02 15:18:11,008 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2021-05-02 15:18:11,008 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 51) the Hoare annotation is: true [2021-05-02 15:18:11,008 INFO L198 CegarLoopUtils]: For program point L49(line 49) no Hoare annotation was computed. [2021-05-02 15:18:11,008 INFO L198 CegarLoopUtils]: For program point L39(lines 39 45) no Hoare annotation was computed. [2021-05-02 15:18:11,008 INFO L194 CegarLoopUtils]: At program point L39-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (div (+ main_~u~0 (- 1)) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ main_~A~0 main_~r~0) .cse0) (<= 0 main_~A~0) (< (+ .cse0 1) (+ main_~A~0 (* 2 .cse1))) (<= main_~A~0 2) (= main_~v~0 1) (= (mod main_~A~0 2) 1) (= (mod (+ main_~u~0 1) 2) 0)))) [2021-05-02 15:18:11,008 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-02 15:18:11,008 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-02 15:18:11,008 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-02 15:18:11,009 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-02 15:18:11,009 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-02 15:18:11,009 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-02 15:18:11,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:18:11 BoogieIcfgContainer [2021-05-02 15:18:11,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:18:11,018 INFO L168 Benchmark]: Toolchain (without parser) took 109667.90 ms. Allocated memory is still 188.7 MB. Free memory was 153.1 MB in the beginning and 87.0 MB in the end (delta: 66.1 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. [2021-05-02 15:18:11,018 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 188.7 MB. Free memory is still 169.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:18:11,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.25 ms. Allocated memory is still 188.7 MB. Free memory was 152.9 MB in the beginning and 171.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2021-05-02 15:18:11,018 INFO L168 Benchmark]: Boogie Preprocessor took 17.00 ms. Allocated memory is still 188.7 MB. Free memory was 171.4 MB in the beginning and 170.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 15:18:11,019 INFO L168 Benchmark]: RCFGBuilder took 273.93 ms. Allocated memory is still 188.7 MB. Free memory was 170.2 MB in the beginning and 154.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:18:11,019 INFO L168 Benchmark]: TraceAbstraction took 109218.12 ms. Allocated memory is still 188.7 MB. Free memory was 154.1 MB in the beginning and 87.0 MB in the end (delta: 67.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 8.0 GB. [2021-05-02 15:18:11,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 188.7 MB. Free memory is still 169.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 155.25 ms. Allocated memory is still 188.7 MB. Free memory was 152.9 MB in the beginning and 171.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.00 ms. Allocated memory is still 188.7 MB. Free memory was 171.4 MB in the beginning and 170.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 273.93 ms. Allocated memory is still 188.7 MB. Free memory was 170.2 MB in the beginning and 154.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 109218.12 ms. Allocated memory is still 188.7 MB. Free memory was 154.1 MB in the beginning and 87.0 MB in the end (delta: 67.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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: 25416.2ms, OverallIterations: 2, TraceHistogramMax: 4, EmptinessCheckTime: 8.3ms, AutomataDifference: 5699.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 83732.3ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 38 SDslu, 70 SDs, 0 SdLazy, 74 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 24509.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 24 PreInvPairs, 30 NumberOfFragments, 285 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 54.1ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 308 FormulaSimplificationTreeSizeReductionInter, 83671.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 25.2ms SsaConstructionTime, 58.6ms SatisfiabilityAnalysisTime, 19291.7ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 302 SizeOfPredicates, 6 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 48/48 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: ((((((R * R + 1 < A + 2 * R && A + r == (u + -1) / 2 * ((u + -1) / 2)) && 0 <= A) && (u + -1) / 2 * ((u + -1) / 2) + 1 < A + 2 * ((u + -1) / 2)) && A <= 2) && v == 1) && A % 2 == 1) && (u + 1) % 2 == 0 RESULT: Ultimate proved your program to be correct! Received shutdown request...