/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/prod4br-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 16:19:36,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 16:19:36,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 16:19:36,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 16:19:36,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 16:19:36,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 16:19:36,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 16:19:36,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 16:19:36,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 16:19:36,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 16:19:36,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 16:19:36,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 16:19:36,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 16:19:36,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 16:19:36,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 16:19:36,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 16:19:36,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 16:19:36,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 16:19:36,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 16:19:36,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 16:19:36,509 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 16:19:36,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 16:19:36,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 16:19:36,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 16:19:36,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 16:19:36,555 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 16:19:36,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 16:19:36,555 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 16:19:36,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 16:19:36,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 16:19:36,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 16:19:36,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 16:19:36,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 16:19:36,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 16:19:36,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 16:19:36,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 16:19:36,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 16:19:36,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 16:19:36,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 16:19:36,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 16:19:36,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 16:19:36,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 16:19:36,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 16:19:36,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 16:19:36,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 16:19:36,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 16:19:36,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 16:19:36,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 16:19:36,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 16:19:36,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 16:19:36,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 16:19:36,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 16:19:36,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 16:19:36,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 16:19:36,897 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 16:19:36,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-05-02 16:19:36,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/badf8c137/990127ba1a0e401ab8ac43ab42f36238/FLAG0bcea41f8 [2021-05-02 16:19:37,295 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 16:19:37,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-05-02 16:19:37,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/badf8c137/990127ba1a0e401ab8ac43ab42f36238/FLAG0bcea41f8 [2021-05-02 16:19:37,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/badf8c137/990127ba1a0e401ab8ac43ab42f36238 [2021-05-02 16:19:37,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 16:19:37,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 16:19:37,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 16:19:37,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 16:19:37,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 16:19:37,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d04cdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37, skipping insertion in model container [2021-05-02 16:19:37,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 16:19:37,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 16:19:37,825 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/prod4br-ll_valuebound1.c[524,537] [2021-05-02 16:19:37,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:19:37,839 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 16:19:37,846 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/prod4br-ll_valuebound1.c[524,537] [2021-05-02 16:19:37,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 16:19:37,902 INFO L208 MainTranslator]: Completed translation [2021-05-02 16:19:37,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37 WrapperNode [2021-05-02 16:19:37,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 16:19:37,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 16:19:37,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 16:19:37,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 16:19:37,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (1/1) ... [2021-05-02 16:19:37,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 16:19:37,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 16:19:37,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 16:19:37,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 16:19:37,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (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 16:19:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 16:19:37,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 16:19:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 16:19:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 16:19:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 16:19:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 16:19:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 16:19:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 16:19:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 16:19:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 16:19:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 16:19:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 16:19:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 16:19:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 16:19:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 16:19:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 16:19:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 16:19:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 16:19:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 16:19:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 16:19:38,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 16:19:38,145 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 16:19:38,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:19:38 BoogieIcfgContainer [2021-05-02 16:19:38,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 16:19:38,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 16:19:38,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 16:19:38,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 16:19:38,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 04:19:37" (1/3) ... [2021-05-02 16:19:38,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eda8010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:19:38, skipping insertion in model container [2021-05-02 16:19:38,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 04:19:37" (2/3) ... [2021-05-02 16:19:38,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eda8010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 04:19:38, skipping insertion in model container [2021-05-02 16:19:38,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 04:19:38" (3/3) ... [2021-05-02 16:19:38,151 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound1.c [2021-05-02 16:19:38,154 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 16:19:38,156 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 16:19:38,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 16:19:38,179 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 16:19:38,179 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 16:19:38,179 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 16:19:38,179 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 16:19:38,179 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 16:19:38,179 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 16:19:38,179 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 16:19:38,179 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 16:19:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 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 16:19:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 16:19:38,191 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:19:38,191 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:19:38,192 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:19:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:19:38,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1738134960, now seen corresponding path program 1 times [2021-05-02 16:19:38,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:19:38,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359382136] [2021-05-02 16:19:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:19:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 16:19:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 16:19:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 16:19:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:38,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 16:19:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 16:19:38,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:19:38,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359382136] [2021-05-02 16:19:38,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359382136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:19:38,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:19:38,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 16:19:38,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649767132] [2021-05-02 16:19:38,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 16:19:38,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:19:38,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 16:19:38,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:19:38,355 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 16:19:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:19:38,434 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2021-05-02 16:19:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 16:19:38,436 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-02 16:19:38,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:19:38,441 INFO L225 Difference]: With dead ends: 61 [2021-05-02 16:19:38,441 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 16:19:38,443 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 16:19:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 16:19:38,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 16:19:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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 16:19:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-05-02 16:19:38,466 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 28 [2021-05-02 16:19:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:19:38,467 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-05-02 16:19:38,467 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 16:19:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-05-02 16:19:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 16:19:38,468 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:19:38,468 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:19:38,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 16:19:38,468 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:19:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:19:38,469 INFO L82 PathProgramCache]: Analyzing trace with hash 567203544, now seen corresponding path program 1 times [2021-05-02 16:19:38,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:19:38,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933537627] [2021-05-02 16:19:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:19:38,483 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:19:38,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134189085] [2021-05-02 16:19:38,483 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 16:19:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:38,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 16:19:38,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:19:38,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 16:19:38,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:19:38,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933537627] [2021-05-02 16:19:38,799 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:19:38,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134189085] [2021-05-02 16:19:38,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134189085] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 16:19:38,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 16:19:38,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 16:19:38,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844108613] [2021-05-02 16:19:38,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 16:19:38,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:19:38,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 16:19:38,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:19:38,802 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:19:38,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:19:38,888 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2021-05-02 16:19:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 16:19:38,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2021-05-02 16:19:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:19:38,889 INFO L225 Difference]: With dead ends: 55 [2021-05-02 16:19:38,890 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 16:19:38,890 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-05-02 16:19:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 16:19:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-05-02 16:19:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 16:19:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-05-02 16:19:38,897 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 28 [2021-05-02 16:19:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:19:38,897 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-05-02 16:19:38,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 16:19:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-05-02 16:19:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-02 16:19:38,898 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:19:38,898 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:19:39,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 16:19:39,114 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:19:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:19:39,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1139707498, now seen corresponding path program 1 times [2021-05-02 16:19:39,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:19:39,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266096096] [2021-05-02 16:19:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:19:39,128 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:19:39,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666514974] [2021-05-02 16:19:39,128 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 16:19:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:39,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 16:19:39,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:19:39,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 16:19:39,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:19:39,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266096096] [2021-05-02 16:19:39,581 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:19:39,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666514974] [2021-05-02 16:19:39,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666514974] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:19:39,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:19:39,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 16:19:39,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083220878] [2021-05-02 16:19:39,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 16:19:39,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:19:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 16:19:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-05-02 16:19:39,582 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 16:19:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:19:42,119 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2021-05-02 16:19:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 16:19:42,119 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 34 [2021-05-02 16:19:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:19:42,121 INFO L225 Difference]: With dead ends: 49 [2021-05-02 16:19:42,121 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 16:19:42,122 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 290.9ms TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-05-02 16:19:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 16:19:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-05-02 16:19:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 16:19:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-05-02 16:19:42,127 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 34 [2021-05-02 16:19:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:19:42,127 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-05-02 16:19:42,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 16:19:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-05-02 16:19:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 16:19:42,128 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:19:42,128 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:19:42,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:19:42,344 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:19:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:19:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash 844519116, now seen corresponding path program 1 times [2021-05-02 16:19:42,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:19:42,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616944743] [2021-05-02 16:19:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:19:42,355 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:19:42,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177640596] [2021-05-02 16:19:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:19:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:42,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 16:19:42,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:19:42,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 16:19:42,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:19:42,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616944743] [2021-05-02 16:19:42,499 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:19:42,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177640596] [2021-05-02 16:19:42,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177640596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:19:42,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:19:42,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 16:19:42,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518518189] [2021-05-02 16:19:42,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 16:19:42,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:19:42,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 16:19:42,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 16:19:42,501 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 16:19:42,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:19:42,559 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2021-05-02 16:19:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 16:19:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2021-05-02 16:19:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:19:42,560 INFO L225 Difference]: With dead ends: 52 [2021-05-02 16:19:42,560 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 16:19:42,561 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 41.9ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-02 16:19:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 16:19:42,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 16:19:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 16:19:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-05-02 16:19:42,566 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 38 [2021-05-02 16:19:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:19:42,566 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-05-02 16:19:42,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 16:19:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-05-02 16:19:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 16:19:42,567 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 16:19:42,567 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 16:19:42,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:19:42,783 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 16:19:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 16:19:42,783 INFO L82 PathProgramCache]: Analyzing trace with hash 901777418, now seen corresponding path program 1 times [2021-05-02 16:19:42,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 16:19:42,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778034166] [2021-05-02 16:19:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 16:19:42,793 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 16:19:42,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652255287] [2021-05-02 16:19:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:19:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 16:19:42,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 16:19:42,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 16:19:42,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:42,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:43,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:43,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 16:19:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 16:19:43,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 16:19:43,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778034166] [2021-05-02 16:19:43,124 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 16:19:43,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652255287] [2021-05-02 16:19:43,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652255287] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 16:19:43,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 16:19:43,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 16:19:43,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286084070] [2021-05-02 16:19:43,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 16:19:43,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 16:19:43,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 16:19:43,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-05-02 16:19:43,126 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 16:19:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 16:19:43,226 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2021-05-02 16:19:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 16:19:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2021-05-02 16:19:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 16:19:43,228 INFO L225 Difference]: With dead ends: 48 [2021-05-02 16:19:43,228 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 16:19:43,230 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-05-02 16:19:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 16:19:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 16:19:43,230 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 16:19:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 16:19:43,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-05-02 16:19:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 16:19:43,231 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 16:19:43,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-02 16:19:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 16:19:43,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 16:19:43,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 16:19:43,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 16:19:43,661 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 29 [2021-05-02 16:19:43,784 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 29 [2021-05-02 16:19:43,928 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-05-02 16:19:44,052 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 16:19:44,054 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 16:19:44,054 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 16:19:44,054 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 16:19:44,054 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 16:19:44,054 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-02 16:19:44,054 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L198 CegarLoopUtils]: For program point L27(line 27) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L198 CegarLoopUtils]: For program point L58(line 58) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 60) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 60) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L198 CegarLoopUtils]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L198 CegarLoopUtils]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L194 CegarLoopUtils]: At program point L34-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse2 (<= 1 main_~y~0)) (.cse3 (<= main_~y~0 1))) (or (let ((.cse1 (+ main_~a~0 1))) (and (= main_~y~0 (+ main_~b~0 1)) (= (+ (* main_~p~0 main_~a~0) main_~p~0 (* main_~p~0 main_~b~0)) main_~q~0) .cse0 (not (= .cse1 0)) (= main_~x~0 .cse1) .cse2 (<= main_~x~0 1) (= main_~p~0 1) .cse3)) (and (<= 1 main_~p~0) (<= main_~y~0 main_~b~0) (<= main_~q~0 0) (= main_~q~0 (* main_~x~0 main_~y~0)) .cse0 .cse2 (= main_~a~0 0) .cse3))) [2021-05-02 16:19:44,055 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 60) the Hoare annotation is: true [2021-05-02 16:19:44,055 INFO L194 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 1)) [2021-05-02 16:19:44,055 INFO L194 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: (and (<= 0 main_~x~0) (<= 0 main_~y~0) (<= main_~x~0 1) (<= main_~y~0 1)) [2021-05-02 16:19:44,055 INFO L194 CegarLoopUtils]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse2 (<= 1 main_~y~0)) (.cse3 (<= main_~y~0 1))) (or (let ((.cse1 (+ main_~a~0 1))) (and (= main_~y~0 (+ main_~b~0 1)) (= (+ (* main_~p~0 main_~a~0) main_~p~0 (* main_~p~0 main_~b~0)) main_~q~0) .cse0 (not (= .cse1 0)) (= main_~x~0 .cse1) .cse2 (<= main_~x~0 1) (= main_~p~0 1) .cse3)) (and (<= 1 main_~p~0) (<= main_~y~0 main_~b~0) (<= main_~q~0 0) (= main_~q~0 (* main_~x~0 main_~y~0)) .cse0 .cse2 (= main_~a~0 0) .cse3))) [2021-05-02 16:19:44,055 INFO L201 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-05-02 16:19:44,055 INFO L198 CegarLoopUtils]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L198 CegarLoopUtils]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-05-02 16:19:44,055 INFO L194 CegarLoopUtils]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse2 (<= 1 main_~y~0)) (.cse3 (<= main_~x~0 1)) (.cse4 (= main_~p~0 1)) (.cse5 (<= main_~y~0 1))) (or (let ((.cse1 (+ main_~a~0 1))) (and (= main_~y~0 (+ main_~b~0 1)) (= (+ (* main_~p~0 main_~a~0) main_~p~0 (* main_~p~0 main_~b~0)) main_~q~0) .cse0 (not (= .cse1 0)) (= main_~x~0 .cse1) .cse2 .cse3 .cse4 .cse5)) (and (= main_~q~0 0) (= main_~a~0 main_~x~0) (= main_~b~0 main_~y~0) .cse0 .cse2 .cse3 .cse4 .cse5))) [2021-05-02 16:19:44,056 INFO L194 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse2 (<= 1 main_~y~0)) (.cse3 (<= main_~x~0 1)) (.cse4 (= main_~p~0 1)) (.cse5 (<= main_~y~0 1))) (or (let ((.cse1 (+ main_~a~0 1))) (and (= main_~y~0 (+ main_~b~0 1)) (= (+ (* main_~p~0 main_~a~0) main_~p~0 (* main_~p~0 main_~b~0)) main_~q~0) .cse0 (not (= .cse1 0)) (= main_~x~0 .cse1) .cse2 .cse3 .cse4 .cse5)) (and (= main_~q~0 0) (= main_~a~0 main_~x~0) (= main_~b~0 main_~y~0) .cse0 .cse2 .cse3 .cse4 .cse5))) [2021-05-02 16:19:44,056 INFO L198 CegarLoopUtils]: For program point L35-1(lines 34 55) no Hoare annotation was computed. [2021-05-02 16:19:44,056 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-02 16:19:44,056 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-02 16:19:44,056 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-02 16:19:44,056 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-02 16:19:44,056 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-02 16:19:44,056 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-02 16:19:44,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 04:19:44 BoogieIcfgContainer [2021-05-02 16:19:44,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 16:19:44,066 INFO L168 Benchmark]: Toolchain (without parser) took 6337.33 ms. Allocated memory was 194.0 MB in the beginning and 263.2 MB in the end (delta: 69.2 MB). Free memory was 159.3 MB in the beginning and 184.9 MB in the end (delta: -25.6 MB). Peak memory consumption was 136.4 MB. Max. memory is 8.0 GB. [2021-05-02 16:19:44,066 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 194.0 MB. Free memory is still 175.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 16:19:44,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.41 ms. Allocated memory is still 194.0 MB. Free memory was 159.1 MB in the beginning and 177.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2021-05-02 16:19:44,066 INFO L168 Benchmark]: Boogie Preprocessor took 17.60 ms. Allocated memory is still 194.0 MB. Free memory was 177.0 MB in the beginning and 175.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 16:19:44,066 INFO L168 Benchmark]: RCFGBuilder took 225.60 ms. Allocated memory is still 194.0 MB. Free memory was 175.6 MB in the beginning and 159.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 16:19:44,066 INFO L168 Benchmark]: TraceAbstraction took 5918.48 ms. Allocated memory was 194.0 MB in the beginning and 263.2 MB in the end (delta: 69.2 MB). Free memory was 158.8 MB in the beginning and 184.9 MB in the end (delta: -26.1 MB). Peak memory consumption was 135.2 MB. Max. memory is 8.0 GB. [2021-05-02 16:19:44,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 194.0 MB. Free memory is still 175.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 172.41 ms. Allocated memory is still 194.0 MB. Free memory was 159.1 MB in the beginning and 177.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.60 ms. Allocated memory is still 194.0 MB. Free memory was 177.0 MB in the beginning and 175.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 225.60 ms. Allocated memory is still 194.0 MB. Free memory was 175.6 MB in the beginning and 159.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5918.48 ms. Allocated memory was 194.0 MB in the beginning and 263.2 MB in the end (delta: 69.2 MB). Free memory was 158.8 MB in the beginning and 184.9 MB in the end (delta: -26.1 MB). Peak memory consumption was 135.2 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, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5272.6ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 8.0ms, AutomataDifference: 2889.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 603.3ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 122 SDtfs, 129 SDslu, 465 SDs, 0 SdLazy, 489 SolverSat, 58 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2563.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 567.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 34 PreInvPairs, 44 NumberOfFragments, 333 HoareAnnotationTreeSize, 34 FomulaSimplifications, 270 FormulaSimplificationTreeSizeReduction, 66.9ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 570 FormulaSimplificationTreeSizeReductionInter, 529.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 50.4ms SsaConstructionTime, 95.0ms SatisfiabilityAnalysisTime, 1002.7ms InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 883 SizeOfPredicates, 20 NumberOfNonLiveVariables, 557 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 60/70 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((y == b + 1 && p * a + p + p * b == q) && 0 <= x) && !(a + 1 == 0)) && x == a + 1) && 1 <= y) && x <= 1) && p == 1) && y <= 1) || (((((((q == 0 && a == x) && b == y) && 0 <= x) && 1 <= y) && x <= 1) && p == 1) && y <= 1) RESULT: Ultimate proved your program to be correct! Received shutdown request...