/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_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 02:40:08,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 02:40:08,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 02:40:08,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 02:40:08,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 02:40:08,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 02:40:08,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 02:40:08,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 02:40:08,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 02:40:08,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 02:40:08,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 02:40:08,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 02:40:08,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 02:40:08,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 02:40:08,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 02:40:08,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 02:40:08,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 02:40:08,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 02:40:08,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 02:40:08,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 02:40:08,374 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 [2021-05-06 02:40:08,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 02:40:08,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 02:40:08,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-06 02:40:08,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-06 02:40:08,402 INFO L138 SettingsManager]: * Use SBE=true [2021-05-06 02:40:08,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 02:40:08,403 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 02:40:08,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 02:40:08,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 02:40:08,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 02:40:08,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 02:40:08,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 02:40:08,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 02:40:08,404 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 02:40:08,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 02:40:08,404 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 02:40:08,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 02:40:08,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 02:40:08,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 02:40:08,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 02:40:08,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 02:40:08,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 02:40:08,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-06 02:40:08,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-06 02:40:08,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 02:40:08,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-06 02:40:08,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 02:40:08,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-06 02:40:08,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 02:40:08,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 02:40:08,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 02:40:08,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 02:40:08,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 02:40:08,752 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 02:40:08,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound1.c [2021-05-06 02:40:08,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409462d94/e0ab6ab1dfb14cf48e0e899b5f960287/FLAG90eb74719 [2021-05-06 02:40:09,437 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 02:40:09,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound1.c [2021-05-06 02:40:09,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409462d94/e0ab6ab1dfb14cf48e0e899b5f960287/FLAG90eb74719 [2021-05-06 02:40:09,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409462d94/e0ab6ab1dfb14cf48e0e899b5f960287 [2021-05-06 02:40:09,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 02:40:09,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 02:40:09,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 02:40:09,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 02:40:09,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 02:40:09,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 02:40:09" (1/1) ... [2021-05-06 02:40:09,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b90c063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:09, skipping insertion in model container [2021-05-06 02:40:09,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 02:40:09" (1/1) ... [2021-05-06 02:40:09,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 02:40:09,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 02:40:09,943 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_valuebound1.c[535,548] [2021-05-06 02:40:09,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 02:40:09,965 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 02:40:09,975 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_valuebound1.c[535,548] [2021-05-06 02:40:09,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 02:40:10,008 INFO L208 MainTranslator]: Completed translation [2021-05-06 02:40:10,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10 WrapperNode [2021-05-06 02:40:10,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 02:40:10,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 02:40:10,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 02:40:10,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 02:40:10,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (1/1) ... [2021-05-06 02:40:10,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (1/1) ... [2021-05-06 02:40:10,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (1/1) ... [2021-05-06 02:40:10,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (1/1) ... [2021-05-06 02:40:10,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (1/1) ... [2021-05-06 02:40:10,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (1/1) ... [2021-05-06 02:40:10,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (1/1) ... [2021-05-06 02:40:10,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 02:40:10,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 02:40:10,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 02:40:10,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 02:40:10,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (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 [2021-05-06 02:40:10,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 02:40:10,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 02:40:10,165 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 02:40:10,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 02:40:10,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 02:40:10,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 02:40:10,166 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 02:40:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 02:40:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 02:40:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 02:40:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 02:40:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 02:40:10,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 02:40:10,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 02:40:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 02:40:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 02:40:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 02:40:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 02:40:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 02:40:10,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 02:40:10,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 02:40:10,387 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-06 02:40:10,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 02:40:10 BoogieIcfgContainer [2021-05-06 02:40:10,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 02:40:10,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 02:40:10,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 02:40:10,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 02:40:10,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 02:40:09" (1/3) ... [2021-05-06 02:40:10,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235b4ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 02:40:10, skipping insertion in model container [2021-05-06 02:40:10,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 02:40:10" (2/3) ... [2021-05-06 02:40:10,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235b4ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 02:40:10, skipping insertion in model container [2021-05-06 02:40:10,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 02:40:10" (3/3) ... [2021-05-06 02:40:10,410 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound1.c [2021-05-06 02:40:10,415 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-06 02:40:10,417 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 02:40:10,430 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 02:40:10,461 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 02:40:10,461 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 02:40:10,461 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-06 02:40:10,461 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 02:40:10,462 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 02:40:10,462 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 02:40:10,462 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 02:40:10,462 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 02:40:10,475 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) [2021-05-06 02:40:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 02:40:10,479 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:40:10,480 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] [2021-05-06 02:40:10,480 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:40:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:40:10,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1718462925, now seen corresponding path program 1 times [2021-05-06 02:40:10,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:40:10,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463752531] [2021-05-06 02:40:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:40:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:40:10,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 02:40:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:40:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 02:40:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:40:10,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 02:40:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:40:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 02:40:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:40:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-06 02:40:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:40:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 02:40:10,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:40:10,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463752531] [2021-05-06 02:40:10,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463752531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 02:40:10,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 02:40:10,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 02:40:10,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846772459] [2021-05-06 02:40:10,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 02:40:10,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:40:10,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 02:40:10,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 02:40:10,710 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) [2021-05-06 02:40:10,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:40:10,836 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-05-06 02:40:10,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 02:40:10,838 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 [2021-05-06 02:40:10,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:40:10,845 INFO L225 Difference]: With dead ends: 67 [2021-05-06 02:40:10,845 INFO L226 Difference]: Without dead ends: 32 [2021-05-06 02:40:10,849 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 02:40:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-06 02:40:10,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-06 02:40:10,902 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) [2021-05-06 02:40:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-05-06 02:40:10,904 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33 [2021-05-06 02:40:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:40:10,905 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-05-06 02:40:10,905 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) [2021-05-06 02:40:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-05-06 02:40:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 02:40:10,906 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:40:10,907 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] [2021-05-06 02:40:10,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 02:40:10,907 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:40:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:40:10,908 INFO L82 PathProgramCache]: Analyzing trace with hash 657160210, now seen corresponding path program 1 times [2021-05-06 02:40:10,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:40:10,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20752673] [2021-05-06 02:40:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:40:10,940 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:40:10,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807392193] [2021-05-06 02:40:10,940 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 [2021-05-06 02:40:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:40:11,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-06 02:40:11,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:40:11,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-06 02:40:11,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:40:11,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20752673] [2021-05-06 02:40:11,381 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:40:11,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807392193] [2021-05-06 02:40:11,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807392193] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 02:40:11,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 02:40:11,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-06 02:40:11,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839632516] [2021-05-06 02:40:11,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 02:40:11,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:40:11,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 02:40:11,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-06 02:40:11,397 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 02:40:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:40:38,894 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2021-05-06 02:40:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-06 02:40:38,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 33 [2021-05-06 02:40:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:40:38,899 INFO L225 Difference]: With dead ends: 42 [2021-05-06 02:40:38,899 INFO L226 Difference]: Without dead ends: 40 [2021-05-06 02:40:38,900 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-05-06 02:40:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-06 02:40:38,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2021-05-06 02:40:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 02:40:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-05-06 02:40:38,923 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 33 [2021-05-06 02:40:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:40:38,924 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-05-06 02:40:38,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 02:40:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-05-06 02:40:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 02:40:38,925 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 02:40:38,925 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] [2021-05-06 02:40:39,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 02:40:39,126 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 02:40:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 02:40:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash 936002262, now seen corresponding path program 1 times [2021-05-06 02:40:39,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 02:40:39,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796545098] [2021-05-06 02:40:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 02:40:39,139 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 02:40:39,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812450108] [2021-05-06 02:40:39,140 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 [2021-05-06 02:40:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 02:40:39,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 02:40:39,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 02:40:39,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:39,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 02:40:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 02:40:39,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 02:40:39,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796545098] [2021-05-06 02:40:39,377 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 02:40:39,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812450108] [2021-05-06 02:40:39,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812450108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 02:40:39,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 02:40:39,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 02:40:39,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212107696] [2021-05-06 02:40:39,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 02:40:39,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 02:40:39,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 02:40:39,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 02:40:39,379 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-06 02:40:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 02:40:39,570 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-05-06 02:40:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 02:40:39,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2021-05-06 02:40:39,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 02:40:39,571 INFO L225 Difference]: With dead ends: 38 [2021-05-06 02:40:39,571 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 02:40:39,572 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 55.4ms TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-06 02:40:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 02:40:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 02:40:39,572 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) [2021-05-06 02:40:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 02:40:39,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-05-06 02:40:39,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 02:40:39,573 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 02:40:39,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-05-06 02:40:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 02:40:39,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 02:40:39,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 02:40:39,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 02:40:40,150 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-06 02:40:40,151 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-06 02:40:40,151 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-06 02:40:40,151 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-06 02:40:40,151 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|)) [2021-05-06 02:40:40,151 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-06 02:40:40,151 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-06 02:40:40,151 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 02:40:40,152 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 02:40:40,152 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-06 02:40:40,152 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-05-06 02:40:40,152 INFO L198 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-05-06 02:40:40,152 INFO L198 CegarLoopUtils]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-05-06 02:40:40,152 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-05-06 02:40:40,152 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))) [2021-05-06 02:40:40,153 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 59) no Hoare annotation was computed. [2021-05-06 02:40:40,153 INFO L201 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-05-06 02:40:40,153 INFO L198 CegarLoopUtils]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-05-06 02:40:40,153 INFO L198 CegarLoopUtils]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2021-05-06 02:40:40,154 INFO L194 CegarLoopUtils]: At program point L48-2(lines 35 55) the Hoare annotation is: (= (+ (* 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))) [2021-05-06 02:40:40,154 INFO L194 CegarLoopUtils]: At program point L40-2(lines 40 46) the Hoare annotation is: (= (+ (* 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))) [2021-05-06 02:40:40,155 INFO L194 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (= (+ (* 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))) [2021-05-06 02:40:40,155 INFO L198 CegarLoopUtils]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2021-05-06 02:40:40,155 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-05-06 02:40:40,155 INFO L198 CegarLoopUtils]: For program point L57(line 57) no Hoare annotation was computed. [2021-05-06 02:40:40,155 INFO L194 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (= (+ (* 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))) [2021-05-06 02:40:40,155 INFO L198 CegarLoopUtils]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2021-05-06 02:40:40,156 INFO L194 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (= (+ (* 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))) [2021-05-06 02:40:40,156 INFO L198 CegarLoopUtils]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2021-05-06 02:40:40,156 INFO L194 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~A~0) (<= main_~A~0 1)) [2021-05-06 02:40:40,156 INFO L194 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 0 main_~A~0) (<= main_~A~0 1) (<= main_~R~0 1) (<= 0 main_~R~0)) [2021-05-06 02:40:40,157 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 59) no Hoare annotation was computed. [2021-05-06 02:40:40,157 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 59) the Hoare annotation is: true [2021-05-06 02:40:40,158 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 1)) [2021-05-06 02:40:40,158 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-05-06 02:40:40,158 INFO L198 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-05-06 02:40:40,158 INFO L198 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-05-06 02:40:40,159 INFO L198 CegarLoopUtils]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-05-06 02:40:40,159 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-05-06 02:40:40,159 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-05-06 02:40:40,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 02:40:40 BoogieIcfgContainer [2021-05-06 02:40:40,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 02:40:40,175 INFO L168 Benchmark]: Toolchain (without parser) took 30360.91 ms. Allocated memory was 183.5 MB in the beginning and 233.8 MB in the end (delta: 50.3 MB). Free memory was 148.7 MB in the beginning and 199.6 MB in the end (delta: -50.9 MB). Peak memory consumption was 88.4 MB. Max. memory is 8.0 GB. [2021-05-06 02:40:40,179 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 183.5 MB. Free memory is still 165.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 02:40:40,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.57 ms. Allocated memory is still 183.5 MB. Free memory was 148.5 MB in the beginning and 138.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-06 02:40:40,182 INFO L168 Benchmark]: Boogie Preprocessor took 89.44 ms. Allocated memory is still 183.5 MB. Free memory was 138.4 MB in the beginning and 166.4 MB in the end (delta: -28.0 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. [2021-05-06 02:40:40,188 INFO L168 Benchmark]: RCFGBuilder took 303.08 ms. Allocated memory is still 183.5 MB. Free memory was 166.4 MB in the beginning and 149.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-06 02:40:40,188 INFO L168 Benchmark]: TraceAbstraction took 29769.28 ms. Allocated memory was 183.5 MB in the beginning and 233.8 MB in the end (delta: 50.3 MB). Free memory was 149.1 MB in the beginning and 199.6 MB in the end (delta: -50.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 8.0 GB. [2021-05-06 02:40:40,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 183.5 MB. Free memory is still 165.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 192.57 ms. Allocated memory is still 183.5 MB. Free memory was 148.5 MB in the beginning and 138.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.44 ms. Allocated memory is still 183.5 MB. Free memory was 138.4 MB in the beginning and 166.4 MB in the end (delta: -28.0 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 303.08 ms. Allocated memory is still 183.5 MB. Free memory was 166.4 MB in the beginning and 149.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 29769.28 ms. Allocated memory was 183.5 MB in the beginning and 233.8 MB in the end (delta: 50.3 MB). Free memory was 149.1 MB in the beginning and 199.6 MB in the end (delta: -50.4 MB). Peak memory consumption was 89.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29330.1ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 9.7ms, AutomataDifference: 27847.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 360.6ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 95 SDtfs, 50 SDslu, 285 SDs, 0 SdLazy, 147 SolverSat, 20 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 27634.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 203.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 67.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 16 LocationsWithAnnotation, 30 PreInvPairs, 41 NumberOfFragments, 217 HoareAnnotationTreeSize, 30 FomulaSimplifications, 374 FormulaSimplificationTreeSizeReduction, 128.0ms HoareSimplificationTime, 16 FomulaSimplificationsInter, 403 FormulaSimplificationTreeSizeReductionInter, 220.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 34.7ms SsaConstructionTime, 79.2ms SatisfiabilityAnalysisTime, 633.9ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 8 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 64/74 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: u * u + v * 2 == v * v + A * 4 + r * 4 + u * 2 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: u * u + v * 2 == v * v + A * 4 + r * 4 + u * 2 RESULT: Ultimate proved your program to be correct! Received shutdown request...