/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 12:31:46,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 12:31:46,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 12:31:46,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 12:31:46,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 12:31:46,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 12:31:46,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 12:31:46,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 12:31:46,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 12:31:46,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 12:31:46,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 12:31:46,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 12:31:46,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 12:31:46,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 12:31:46,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 12:31:46,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 12:31:46,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 12:31:46,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 12:31:46,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 12:31:46,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 12:31:46,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 12:31:46,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 12:31:46,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 12:31:46,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 12:31:46,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 12:31:46,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 12:31:46,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 12:31:46,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 12:31:46,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 12:31:46,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 12:31:46,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 12:31:46,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 12:31:46,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 12:31:46,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 12:31:46,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 12:31:46,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 12:31:46,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 12:31:46,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 12:31:46,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 12:31:46,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 12:31:46,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 12:31:46,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 12:31:46,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 12:31:46,530 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 12:31:46,530 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 12:31:46,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 12:31:46,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 12:31:46,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 12:31:46,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 12:31:46,864 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 12:31:46,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound1.c [2021-05-06 12:31:46,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac91cd5bd/4cfd0a412e39417ebbf86b3a6ae571a5/FLAG9c9d8832e [2021-05-06 12:31:47,403 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 12:31:47,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound1.c [2021-05-06 12:31:47,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac91cd5bd/4cfd0a412e39417ebbf86b3a6ae571a5/FLAG9c9d8832e [2021-05-06 12:31:47,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac91cd5bd/4cfd0a412e39417ebbf86b3a6ae571a5 [2021-05-06 12:31:47,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 12:31:47,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 12:31:47,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 12:31:47,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 12:31:47,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 12:31:47,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68898ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47, skipping insertion in model container [2021-05-06 12:31:47,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 12:31:47,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 12:31:47,581 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/hard-u_valuebound1.c[545,558] [2021-05-06 12:31:47,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 12:31:47,601 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 12:31:47,643 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/hard-u_valuebound1.c[545,558] [2021-05-06 12:31:47,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 12:31:47,677 INFO L208 MainTranslator]: Completed translation [2021-05-06 12:31:47,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47 WrapperNode [2021-05-06 12:31:47,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 12:31:47,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 12:31:47,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 12:31:47,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 12:31:47,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (1/1) ... [2021-05-06 12:31:47,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 12:31:47,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 12:31:47,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 12:31:47,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 12:31:47,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (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 12:31:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 12:31:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 12:31:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 12:31:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 12:31:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 12:31:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 12:31:47,796 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 12:31:47,796 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 12:31:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 12:31:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 12:31:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-06 12:31:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 12:31:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 12:31:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 12:31:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 12:31:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 12:31:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 12:31:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 12:31:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 12:31:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 12:31:48,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 12:31:48,107 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-06 12:31:48,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:31:48 BoogieIcfgContainer [2021-05-06 12:31:48,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 12:31:48,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 12:31:48,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 12:31:48,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 12:31:48,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 12:31:47" (1/3) ... [2021-05-06 12:31:48,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432fc8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:31:48, skipping insertion in model container [2021-05-06 12:31:48,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:31:47" (2/3) ... [2021-05-06 12:31:48,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432fc8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:31:48, skipping insertion in model container [2021-05-06 12:31:48,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:31:48" (3/3) ... [2021-05-06 12:31:48,115 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound1.c [2021-05-06 12:31:48,119 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 12:31:48,122 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 12:31:48,136 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 12:31:48,153 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 12:31:48,153 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 12:31:48,153 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 12:31:48,153 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 12:31:48,153 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 12:31:48,153 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 12:31:48,153 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 12:31:48,153 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 12:31:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 12:31:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 12:31:48,175 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:31:48,176 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:31:48,176 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:31:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:31:48,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times [2021-05-06 12:31:48,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:31:48,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028888520] [2021-05-06 12:31:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:31:48,251 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 12:31:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:31:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 12:31:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 12:31:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 12:31:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 12:31:48,506 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:31:48,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028888520] [2021-05-06 12:31:48,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1028888520] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:31:48,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:31:48,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 12:31:48,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914555060] [2021-05-06 12:31:48,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 12:31:48,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:31:48,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 12:31:48,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 12:31:48,523 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 12:31:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:31:48,730 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2021-05-06 12:31:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 12:31:48,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-06 12:31:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:31:48,737 INFO L225 Difference]: With dead ends: 69 [2021-05-06 12:31:48,738 INFO L226 Difference]: Without dead ends: 33 [2021-05-06 12:31:48,740 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 12:31:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-06 12:31:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-06 12:31:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 12:31:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-05-06 12:31:48,796 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2021-05-06 12:31:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:31:48,797 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-05-06 12:31:48,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 12:31:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-05-06 12:31:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-06 12:31:48,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:31:48,799 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:31:48,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 12:31:48,799 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:31:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:31:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times [2021-05-06 12:31:48,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:31:48,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767060508] [2021-05-06 12:31:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:31:48,803 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 12:31:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:31:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 12:31:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 12:31:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 12:31:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 12:31:48,933 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:31:48,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767060508] [2021-05-06 12:31:48,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [767060508] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:31:48,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:31:48,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 12:31:48,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844918186] [2021-05-06 12:31:48,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 12:31:48,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:31:48,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 12:31:48,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 12:31:48,936 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 12:31:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:31:49,286 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2021-05-06 12:31:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 12:31:49,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2021-05-06 12:31:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:31:49,291 INFO L225 Difference]: With dead ends: 46 [2021-05-06 12:31:49,291 INFO L226 Difference]: Without dead ends: 44 [2021-05-06 12:31:49,292 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.7ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 12:31:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-06 12:31:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2021-05-06 12:31:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 12:31:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2021-05-06 12:31:49,323 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2021-05-06 12:31:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:31:49,324 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2021-05-06 12:31:49,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 12:31:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2021-05-06 12:31:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 12:31:49,329 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:31:49,329 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:31:49,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 12:31:49,330 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:31:49,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:31:49,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times [2021-05-06 12:31:49,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:31:49,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669196345] [2021-05-06 12:31:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:31:49,337 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 12:31:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:31:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 12:31:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:49,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-06 12:31:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-06 12:31:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 12:31:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:31:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 12:31:49,631 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:31:49,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669196345] [2021-05-06 12:31:49,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1669196345] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:31:49,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:31:49,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 12:31:49,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883565953] [2021-05-06 12:31:49,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 12:31:49,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:31:49,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 12:31:49,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 12:31:49,633 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 12:31:49,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:31:49,996 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2021-05-06 12:31:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 12:31:49,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-06 12:31:49,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:31:49,998 INFO L225 Difference]: With dead ends: 50 [2021-05-06 12:31:49,998 INFO L226 Difference]: Without dead ends: 48 [2021-05-06 12:31:49,998 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 196.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 12:31:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-06 12:31:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2021-05-06 12:31:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 12:31:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-05-06 12:31:50,011 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2021-05-06 12:31:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:31:50,011 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-05-06 12:31:50,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 12:31:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-05-06 12:31:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-06 12:31:50,013 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:31:50,013 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-05-06 12:31:50,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 12:31:50,013 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:31:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:31:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times [2021-05-06 12:31:50,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:31:50,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865880488] [2021-05-06 12:31:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:31:50,016 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 12:31:50,025 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-06 12:31:50,025 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 12:31:50,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 12:31:50,040 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-06 12:31:50,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 12:31:50 BoogieIcfgContainer [2021-05-06 12:31:50,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 12:31:50,042 INFO L168 Benchmark]: Toolchain (without parser) took 2606.50 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 132.4 MB in the beginning and 166.9 MB in the end (delta: -34.5 MB). Peak memory consumption was 465.6 kB. Max. memory is 8.0 GB. [2021-05-06 12:31:50,042 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 166.7 MB. Free memory is still 149.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 12:31:50,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.97 ms. Allocated memory is still 166.7 MB. Free memory was 132.3 MB in the beginning and 150.0 MB in the end (delta: -17.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 12:31:50,043 INFO L168 Benchmark]: Boogie Preprocessor took 49.61 ms. Allocated memory is still 166.7 MB. Free memory was 150.0 MB in the beginning and 148.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 12:31:50,043 INFO L168 Benchmark]: RCFGBuilder took 379.96 ms. Allocated memory is still 166.7 MB. Free memory was 148.5 MB in the beginning and 132.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 12:31:50,044 INFO L168 Benchmark]: TraceAbstraction took 1930.81 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 131.7 MB in the beginning and 166.9 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 12:31:50,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 166.7 MB. Free memory is still 149.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.97 ms. Allocated memory is still 166.7 MB. Free memory was 132.3 MB in the beginning and 150.0 MB in the end (delta: -17.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.61 ms. Allocated memory is still 166.7 MB. Free memory was 150.0 MB in the beginning and 148.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 379.96 ms. Allocated memory is still 166.7 MB. Free memory was 148.5 MB in the beginning and 132.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1930.81 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 131.7 MB in the beginning and 166.9 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] unsigned int A, B; [L24] unsigned int r, d, p, q; [L25] A = __VERIFIER_nondet_unsigned_int() [L26] CALL assume_abort_if_not(A>=0 && A<=1) [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(A>=0 && A<=1) [L27] B = __VERIFIER_nondet_unsigned_int() [L28] CALL assume_abort_if_not(B>=0 && B<=1) [L12] COND FALSE !(!cond) [L28] RET assume_abort_if_not(B>=0 && B<=1) [L29] CALL assume_abort_if_not(B >= 1) [L12] COND FALSE !(!cond) [L29] RET assume_abort_if_not(B >= 1) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L37] CALL __VERIFIER_assert(q == 0) [L15] COND FALSE !(!(cond)) [L37] RET __VERIFIER_assert(q == 0) [L38] CALL __VERIFIER_assert(r == A) [L15] COND FALSE !(!(cond)) [L38] RET __VERIFIER_assert(r == A) [L39] CALL __VERIFIER_assert(d == B * p) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1878.9ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 16.9ms, AutomataDifference: 951.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 97 SDtfs, 92 SDslu, 77 SDs, 0 SdLazy, 233 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 429.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 431.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 86.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...