/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/fermat1-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 15:05:29,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 15:05:29,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 15:05:29,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 15:05:29,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 15:05:29,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 15:05:29,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 15:05:29,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 15:05:29,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 15:05:29,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 15:05:29,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 15:05:29,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 15:05:29,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 15:05:29,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 15:05:29,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 15:05:29,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 15:05:29,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 15:05:29,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 15:05:29,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 15:05:29,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 15:05:29,527 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 15:05:29,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 15:05:29,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 15:05:29,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 15:05:29,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 15:05:29,576 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 15:05:29,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 15:05:29,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 15:05:29,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 15:05:29,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 15:05:29,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 15:05:29,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 15:05:29,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 15:05:29,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 15:05:29,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 15:05:29,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 15:05:29,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 15:05:29,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 15:05:29,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 15:05:29,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 15:05:29,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 15:05:29,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 15:05:29,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 15:05:29,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 15:05:29,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 15:05:29,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 15:05:29,848 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 15:05:29,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-05-02 15:05:29,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e223c847/6d3e3fa61da94c8b86cc0439cbfa1f7d/FLAGe7420d9b2 [2021-05-02 15:05:30,270 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 15:05:30,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-05-02 15:05:30,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e223c847/6d3e3fa61da94c8b86cc0439cbfa1f7d/FLAGe7420d9b2 [2021-05-02 15:05:30,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e223c847/6d3e3fa61da94c8b86cc0439cbfa1f7d [2021-05-02 15:05:30,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 15:05:30,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 15:05:30,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 15:05:30,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 15:05:30,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 15:05:30,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e919ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30, skipping insertion in model container [2021-05-02 15:05:30,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 15:05:30,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 15:05:30,417 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/fermat1-ll_valuebound2.c[535,548] [2021-05-02 15:05:30,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:05:30,444 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 15:05:30,463 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/fermat1-ll_valuebound2.c[535,548] [2021-05-02 15:05:30,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 15:05:30,504 INFO L208 MainTranslator]: Completed translation [2021-05-02 15:05:30,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30 WrapperNode [2021-05-02 15:05:30,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 15:05:30,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 15:05:30,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 15:05:30,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 15:05:30,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (1/1) ... [2021-05-02 15:05:30,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 15:05:30,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 15:05:30,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 15:05:30,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 15:05:30,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (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 15:05:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 15:05:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 15:05:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 15:05:30,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 15:05:30,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 15:05:30,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 15:05:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 15:05:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 15:05:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 15:05:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 15:05:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 15:05:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 15:05:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 15:05:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 15:05:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 15:05:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 15:05:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 15:05:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 15:05:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 15:05:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 15:05:30,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 15:05:30,777 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-02 15:05:30,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:05:30 BoogieIcfgContainer [2021-05-02 15:05:30,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 15:05:30,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 15:05:30,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 15:05:30,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 15:05:30,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 03:05:30" (1/3) ... [2021-05-02 15:05:30,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5498aa40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:05:30, skipping insertion in model container [2021-05-02 15:05:30,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 03:05:30" (2/3) ... [2021-05-02 15:05:30,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5498aa40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 03:05:30, skipping insertion in model container [2021-05-02 15:05:30,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 03:05:30" (3/3) ... [2021-05-02 15:05:30,782 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound2.c [2021-05-02 15:05:30,786 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 15:05:30,787 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 15:05:30,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 15:05:30,809 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 15:05:30,810 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 15:05:30,810 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 15:05:30,810 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 15:05:30,810 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 15:05:30,810 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 15:05:30,810 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 15:05:30,810 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 15:05:30,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 15:05:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:05:30,822 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:05:30,823 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 15:05:30,823 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:05:30,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:05:30,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1718462925, now seen corresponding path program 1 times [2021-05-02 15:05:30,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:05:30,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460484066] [2021-05-02 15:05:30,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:05:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:30,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 15:05:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 15:05:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 15:05:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:30,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 15:05:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:30,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 15:05:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:30,975 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 15:05:30,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:05:30,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460484066] [2021-05-02 15:05:30,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460484066] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:05:30,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:05:30,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 15:05:30,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160831539] [2021-05-02 15:05:30,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 15:05:30,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:05:30,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 15:05:30,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:05:30,996 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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 15:05:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:05:31,068 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-05-02 15:05:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 15:05:31,070 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 15:05:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:05:31,074 INFO L225 Difference]: With dead ends: 67 [2021-05-02 15:05:31,074 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 15:05:31,076 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 15:05:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 15:05:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 15:05:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 15:05:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-05-02 15:05:31,099 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33 [2021-05-02 15:05:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:05:31,099 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-05-02 15:05:31,099 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 15:05:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-05-02 15:05:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 15:05:31,101 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:05:31,101 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 15:05:31,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 15:05:31,101 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:05:31,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:05:31,101 INFO L82 PathProgramCache]: Analyzing trace with hash 657160210, now seen corresponding path program 1 times [2021-05-02 15:05:31,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:05:31,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110006450] [2021-05-02 15:05:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:05:31,134 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:05:31,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849782251] [2021-05-02 15:05:31,134 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 15:05:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:31,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 15:05:31,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:05:31,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:05:31,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:05:31,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110006450] [2021-05-02 15:05:31,393 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:05:31,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849782251] [2021-05-02 15:05:31,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849782251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:05:31,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:05:31,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 15:05:31,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712551054] [2021-05-02 15:05:31,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 15:05:31,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:05:31,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 15:05:31,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 15:05:31,395 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:05:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:05:33,522 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-02 15:05:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 15:05:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 15:05:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:05:33,524 INFO L225 Difference]: With dead ends: 48 [2021-05-02 15:05:33,525 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 15:05:33,525 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.3ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 15:05:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 15:05:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-05-02 15:05:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 15:05:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-05-02 15:05:33,534 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 33 [2021-05-02 15:05:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:05:33,534 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-05-02 15:05:33,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 15:05:33,534 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-05-02 15:05:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 15:05:33,535 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:05:33,535 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:05:33,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 15:05:33,750 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:05:33,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:05:33,751 INFO L82 PathProgramCache]: Analyzing trace with hash 936002262, now seen corresponding path program 1 times [2021-05-02 15:05:33,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:05:33,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490920901] [2021-05-02 15:05:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:05:33,764 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:05:33,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736670046] [2021-05-02 15:05:33,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:05:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:33,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 15:05:33,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:05:33,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:34,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:34,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 15:05:34,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:05:34,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490920901] [2021-05-02 15:05:34,071 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:05:34,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736670046] [2021-05-02 15:05:34,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736670046] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:05:34,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:05:34,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 15:05:34,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174821234] [2021-05-02 15:05:34,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 15:05:34,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:05:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 15:05:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 15:05:34,072 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 15:05:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:05:41,034 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2021-05-02 15:05:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 15:05:41,048 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-05-02 15:05:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:05:41,050 INFO L225 Difference]: With dead ends: 63 [2021-05-02 15:05:41,050 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 15:05:41,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 122.6ms TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-05-02 15:05:41,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 15:05:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-02 15:05:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.135135135135135) internal successors, (42), 41 states have internal predecessors, (42), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 15:05:41,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2021-05-02 15:05:41,060 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 39 [2021-05-02 15:05:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:05:41,060 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2021-05-02 15:05:41,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 15:05:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2021-05-02 15:05:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 15:05:41,061 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:05:41,061 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 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, 1] [2021-05-02 15:05:41,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:05:41,262 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:05:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:05:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash 584476005, now seen corresponding path program 1 times [2021-05-02 15:05:41,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:05:41,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010015989] [2021-05-02 15:05:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:05:41,271 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:05:41,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400656447] [2021-05-02 15:05:41,271 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 15:05:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:05:41,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 15:05:41,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:05:41,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:41,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:41,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:41,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:41,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:41,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:41,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:41,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:03,182 WARN L205 SmtUtils]: Spent 18.80 s on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-05-02 15:06:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:03,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,903 WARN L205 SmtUtils]: Spent 10.68 s on a formula simplification that was a NOOP. DAG size: 20 [2021-05-02 15:06:13,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-05-02 15:06:13,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:06:13,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010015989] [2021-05-02 15:06:14,000 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:06:14,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400656447] [2021-05-02 15:06:14,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400656447] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:06:14,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:06:14,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 15:06:14,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770217443] [2021-05-02 15:06:14,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 15:06:14,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:06:14,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 15:06:14,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2021-05-02 15:06:14,001 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-05-02 15:06:25,436 WARN L205 SmtUtils]: Spent 11.40 s on a formula simplification that was a NOOP. DAG size: 20 [2021-05-02 15:06:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:06:30,557 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2021-05-02 15:06:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 15:06:30,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2021-05-02 15:06:30,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:06:30,561 INFO L225 Difference]: With dead ends: 92 [2021-05-02 15:06:30,561 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 15:06:30,561 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 43907.3ms TimeCoverageRelationStatistics Valid=33, Invalid=76, Unknown=1, NotChecked=0, Total=110 [2021-05-02 15:06:30,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 15:06:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-05-02 15:06:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 47 states have internal predecessors, (49), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (18), 14 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 15:06:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2021-05-02 15:06:30,592 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 47 [2021-05-02 15:06:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:06:30,593 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2021-05-02 15:06:30,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2021-05-02 15:06:30,593 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2021-05-02 15:06:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 15:06:30,595 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:06:30,596 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2021-05-02 15:06:30,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:06:30,797 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:06:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:06:30,797 INFO L82 PathProgramCache]: Analyzing trace with hash 835669333, now seen corresponding path program 1 times [2021-05-02 15:06:30,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:06:30,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977472196] [2021-05-02 15:06:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:06:30,811 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:06:30,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115700800] [2021-05-02 15:06:30,811 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 15:06:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:06:30,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 15:06:30,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:06:30,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:30,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:30,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:30,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:30,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:30,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:30,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:30,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:52,675 WARN L205 SmtUtils]: Spent 18.78 s on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-05-02 15:06:52,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:52,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:52,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:06:52,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,361 WARN L205 SmtUtils]: Spent 10.67 s on a formula simplification that was a NOOP. DAG size: 20 [2021-05-02 15:07:03,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:07:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 15:07:03,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:07:03,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977472196] [2021-05-02 15:07:03,485 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:07:03,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115700800] [2021-05-02 15:07:03,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115700800] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 15:07:03,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 15:07:03,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 15:07:03,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702716551] [2021-05-02 15:07:03,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 15:07:03,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:07:03,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 15:07:03,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2021-05-02 15:07:03,488 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-05-02 15:07:19,700 WARN L205 SmtUtils]: Spent 16.15 s on a formula simplification that was a NOOP. DAG size: 20 [2021-05-02 15:07:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:07:19,739 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2021-05-02 15:07:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 15:07:19,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 54 [2021-05-02 15:07:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:07:19,741 INFO L225 Difference]: With dead ends: 77 [2021-05-02 15:07:19,741 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 15:07:19,741 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 48618.2ms TimeCoverageRelationStatistics Valid=33, Invalid=76, Unknown=1, NotChecked=0, Total=110 [2021-05-02 15:07:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 15:07:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 15:07:19,742 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 15:07:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 15:07:19,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2021-05-02 15:07:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:07:19,742 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 15:07:19,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-05-02 15:07:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 15:07:19,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 15:07:19,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:07:19,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 15:07:58,697 WARN L205 SmtUtils]: Spent 38.55 s on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2021-05-02 15:08:40,252 WARN L205 SmtUtils]: Spent 41.54 s on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2021-05-02 15:09:54,000 WARN L205 SmtUtils]: Spent 1.23 m on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2021-05-02 15:11:19,351 WARN L205 SmtUtils]: Spent 1.42 m on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2021-05-02 15:13:08,185 WARN L205 SmtUtils]: Spent 1.81 m on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:13:08,187 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 15:13:08,187 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 15:13:08,187 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 15:13:08,187 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 15:13:08,187 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-02 15:13:08,187 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-02 15:13:08,188 INFO L194 CegarLoopUtils]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* main_~A~0 4)) (.cse3 (* main_~u~0 2)) (.cse0 (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)))) (and (= .cse0 (+ .cse1 .cse2 (* main_~r~0 4) .cse3)) (= (+ .cse1 .cse2 .cse3) .cse0) (<= 0 main_~A~0) (<= main_~A~0 2))) [2021-05-02 15:13:08,188 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 59) no Hoare annotation was computed. [2021-05-02 15:13:08,188 INFO L201 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-05-02 15:13:08,188 INFO L198 CegarLoopUtils]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-05-02 15:13:08,188 INFO L198 CegarLoopUtils]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2021-05-02 15:13:08,188 INFO L194 CegarLoopUtils]: At program point L48-2(lines 35 55) the Hoare annotation is: (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ main_~A~0 main_~r~0) (let ((.cse0 (div (+ main_~u~0 (- 1)) 2))) (* .cse0 .cse0))) (<= 0 main_~A~0) (<= main_~A~0 2) (exists ((main_~R~0 Int)) (let ((.cse1 (* main_~R~0 main_~R~0))) (and (< (+ .cse1 1) (+ main_~A~0 (* 2 main_~R~0))) (<= .cse1 (+ main_~A~0 main_~r~0))))) (= main_~v~0 1) (exists ((main_~R~0 Int)) (let ((.cse2 (* main_~R~0 main_~R~0))) (and (< (+ .cse2 1) (+ main_~A~0 (* 2 main_~R~0))) (<= (+ main_~A~0 main_~r~0) .cse2)))) (= (mod main_~A~0 2) 1) (= (mod (+ main_~u~0 1) 2) 0)) [2021-05-02 15:13:08,188 INFO L194 CegarLoopUtils]: At program point L40-2(lines 40 46) the Hoare annotation is: (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) (<= 0 main_~A~0) (<= main_~A~0 2) (exists ((main_~R~0 Int)) (let ((.cse0 (* main_~R~0 main_~R~0))) (and (< (+ .cse0 1) (+ main_~A~0 (* 2 main_~R~0))) (<= .cse0 (+ main_~A~0 main_~r~0))))) (= main_~v~0 1) (exists ((main_~R~0 Int)) (let ((.cse1 (* main_~R~0 main_~R~0))) (and (< (+ .cse1 1) (+ main_~A~0 (* 2 main_~R~0))) (<= (+ main_~A~0 main_~r~0) .cse1)))) (= (mod main_~A~0 2) 1)) [2021-05-02 15:13:08,188 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ main_~A~0 main_~r~0) (let ((.cse0 (div (+ main_~u~0 (- 1)) 2))) (* .cse0 .cse0))) (<= 0 main_~A~0) (<= main_~A~0 2) (exists ((main_~R~0 Int)) (let ((.cse1 (* main_~R~0 main_~R~0))) (and (< (+ .cse1 1) (+ main_~A~0 (* 2 main_~R~0))) (<= .cse1 (+ main_~A~0 main_~r~0))))) (= main_~v~0 1) (exists ((main_~R~0 Int)) (let ((.cse2 (* main_~R~0 main_~R~0))) (and (< (+ .cse2 1) (+ main_~A~0 (* 2 main_~R~0))) (<= (+ main_~A~0 main_~r~0) .cse2)))) (= (mod main_~A~0 2) 1) (= (mod (+ main_~u~0 1) 2) 0)) [2021-05-02 15:13:08,188 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2021-05-02 15:13:08,188 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-05-02 15:13:08,188 INFO L198 CegarLoopUtils]: For program point L57(line 57) no Hoare annotation was computed. [2021-05-02 15:13:08,188 INFO L194 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) (<= 0 main_~A~0) (<= main_~A~0 2) (exists ((main_~R~0 Int)) (let ((.cse0 (* main_~R~0 main_~R~0))) (and (< (+ .cse0 1) (+ main_~A~0 (* 2 main_~R~0))) (<= .cse0 (+ main_~A~0 main_~r~0))))) (= main_~v~0 1) (exists ((main_~R~0 Int)) (let ((.cse1 (* main_~R~0 main_~R~0))) (and (< (+ .cse1 1) (+ main_~A~0 (* 2 main_~R~0))) (<= (+ main_~A~0 main_~r~0) .cse1)))) (= (mod main_~A~0 2) 1)) [2021-05-02 15:13:08,189 INFO L198 CegarLoopUtils]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2021-05-02 15:13:08,189 INFO L194 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* 2 main_~R~0))) (= (+ (* main_~u~0 main_~u~0) (* main_~v~0 2)) (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2))) (<= 0 main_~A~0) (<= main_~A~0 2) (exists ((main_~R~0 Int)) (let ((.cse0 (* main_~R~0 main_~R~0))) (and (< (+ .cse0 1) (+ main_~A~0 (* 2 main_~R~0))) (<= .cse0 (+ main_~A~0 main_~r~0))))) (= main_~v~0 1) (exists ((main_~R~0 Int)) (let ((.cse1 (* main_~R~0 main_~R~0))) (and (< (+ .cse1 1) (+ main_~A~0 (* 2 main_~R~0))) (<= (+ main_~A~0 main_~r~0) .cse1)))) (= (mod main_~A~0 2) 1)) [2021-05-02 15:13:08,189 INFO L198 CegarLoopUtils]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2021-05-02 15:13:08,189 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 15:13:08,189 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 15:13:08,189 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 59) no Hoare annotation was computed. [2021-05-02 15:13:08,189 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 59) the Hoare annotation is: true [2021-05-02 15:13:08,189 INFO L194 CegarLoopUtils]: At program point L26(line 26) 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 15:13:08,189 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-02 15:13:08,189 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-02 15:13:08,189 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-02 15:13:08,189 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-02 15:13:08,189 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-02 15:13:08,189 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-02 15:13:08,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,195 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 03:13:08 BoogieIcfgContainer [2021-05-02 15:13:08,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 15:13:08,204 INFO L168 Benchmark]: Toolchain (without parser) took 457913.98 ms. Allocated memory was 183.5 MB in the beginning and 252.7 MB in the end (delta: 69.2 MB). Free memory was 148.5 MB in the beginning and 123.1 MB in the end (delta: 25.4 MB). Peak memory consumption was 96.0 MB. Max. memory is 8.0 GB. [2021-05-02 15:13:08,204 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 183.5 MB. Free memory is still 165.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 15:13:08,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.27 ms. Allocated memory is still 183.5 MB. Free memory was 148.2 MB in the beginning and 166.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-05-02 15:13:08,204 INFO L168 Benchmark]: Boogie Preprocessor took 29.89 ms. Allocated memory is still 183.5 MB. Free memory was 166.4 MB in the beginning and 164.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 15:13:08,204 INFO L168 Benchmark]: RCFGBuilder took 241.93 ms. Allocated memory is still 183.5 MB. Free memory was 164.7 MB in the beginning and 148.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 15:13:08,205 INFO L168 Benchmark]: TraceAbstraction took 457424.55 ms. Allocated memory was 183.5 MB in the beginning and 252.7 MB in the end (delta: 69.2 MB). Free memory was 148.3 MB in the beginning and 123.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 96.0 MB. Max. memory is 8.0 GB. [2021-05-02 15:13:08,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 183.5 MB. Free memory is still 165.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 214.27 ms. Allocated memory is still 183.5 MB. Free memory was 148.2 MB in the beginning and 166.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.89 ms. Allocated memory is still 183.5 MB. Free memory was 166.4 MB in the beginning and 164.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 241.93 ms. Allocated memory is still 183.5 MB. Free memory was 164.7 MB in the beginning and 148.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 457424.55 ms. Allocated memory was 183.5 MB in the beginning and 252.7 MB in the end (delta: 69.2 MB). Free memory was 148.3 MB in the beginning and 123.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 96.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] * 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, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 109135.1ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 9.8ms, AutomataDifference: 42013.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 348243.0ms, InitialAbstractionConstructionTime: 6.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 146 SDtfs, 129 SDslu, 456 SDs, 0 SdLazy, 431 SolverSat, 48 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 14191.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 92717.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=4, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 63.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 16 LocationsWithAnnotation, 44 PreInvPairs, 55 NumberOfFragments, 555 HoareAnnotationTreeSize, 44 FomulaSimplifications, 350 FormulaSimplificationTreeSizeReduction, 113.5ms HoareSimplificationTime, 16 FomulaSimplificationsInter, 467 FormulaSimplificationTreeSizeReductionInter, 348121.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 34.0ms SsaConstructionTime, 108.8ms SatisfiabilityAnalysisTime, 65819.6ms InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 201 ConstructedInterpolants, 15 QuantifiedInterpolants, 1097 SizeOfPredicates, 17 NumberOfNonLiveVariables, 606 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 133/152 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: 40]: Loop Invariant [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,208 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] Derived loop invariant: ((((((R * R + 1 < A + 2 * R && u * u + v * 2 == v * v + A * 4 + r * 4 + u * 2) && 0 <= A) && A <= 2) && (\exists main_~R~0 : int :: main_~R~0 * main_~R~0 + 1 < A + 2 * main_~R~0 && main_~R~0 * main_~R~0 <= A + r)) && v == 1) && (\exists main_~R~0 : int :: main_~R~0 * main_~R~0 + 1 < A + 2 * main_~R~0 && A + r <= main_~R~0 * main_~R~0)) && A % 2 == 1 - InvariantResult [Line: 35]: Loop Invariant [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,209 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2021-05-02 15:13:08,210 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] Derived loop invariant: (((((((R * R + 1 < A + 2 * R && A + r == (u + -1) / 2 * ((u + -1) / 2)) && 0 <= A) && A <= 2) && (\exists main_~R~0 : int :: main_~R~0 * main_~R~0 + 1 < A + 2 * main_~R~0 && main_~R~0 * main_~R~0 <= A + r)) && v == 1) && (\exists main_~R~0 : int :: main_~R~0 * main_~R~0 + 1 < A + 2 * main_~R~0 && A + r <= main_~R~0 * main_~R~0)) && A % 2 == 1) && (u + 1) % 2 == 0 RESULT: Ultimate proved your program to be correct! Received shutdown request...