/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/geo1-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-03 00:43:58,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 00:43:58,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 00:43:58,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-03 00:43:58,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-03 00:43:58,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-03 00:43:58,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-03 00:43:58,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-03 00:43:58,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-03 00:43:58,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-03 00:43:58,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-03 00:43:58,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-03 00:43:58,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-03 00:43:58,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-03 00:43:58,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-03 00:43:58,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-03 00:43:58,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-03 00:43:58,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 00:43:58,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 00:43:58,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 00:43:58,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-03 00:43:58,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 00:43:58,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 00:43:58,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 00:43:58,955 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 00:43:58,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 00:43:58,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 00:43:58,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 00:43:58,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 00:43:58,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 00:43:58,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 00:43:58,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 00:43:58,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 00:43:58,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 00:43:58,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 00:43:58,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 00:43:58,958 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 00:43:58,958 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 00:43:58,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 00:43:58,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:43:58,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 00:43:58,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-03 00:43:58,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 00:43:58,959 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-03 00:43:58,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-03 00:43:59,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 00:43:59,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 00:43:59,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 00:43:59,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-03 00:43:59,320 INFO L275 PluginConnector]: CDTParser initialized [2021-05-03 00:43:59,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound1.c [2021-05-03 00:43:59,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de60c5c2/6a3c381694c3477d9320e05f6b459884/FLAG98fbc4215 [2021-05-03 00:43:59,846 INFO L306 CDTParser]: Found 1 translation units. [2021-05-03 00:43:59,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound1.c [2021-05-03 00:43:59,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de60c5c2/6a3c381694c3477d9320e05f6b459884/FLAG98fbc4215 [2021-05-03 00:43:59,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de60c5c2/6a3c381694c3477d9320e05f6b459884 [2021-05-03 00:43:59,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 00:43:59,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 00:43:59,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-03 00:43:59,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-03 00:43:59,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-03 00:43:59,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:43:59" (1/1) ... [2021-05-03 00:43:59,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290be19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:43:59, skipping insertion in model container [2021-05-03 00:43:59,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:43:59" (1/1) ... [2021-05-03 00:43:59,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-03 00:43:59,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-03 00:44:00,006 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/geo1-ll_valuebound1.c[546,559] [2021-05-03 00:44:00,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:44:00,024 INFO L203 MainTranslator]: Completed pre-run [2021-05-03 00:44:00,057 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/geo1-ll_valuebound1.c[546,559] [2021-05-03 00:44:00,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:44:00,102 INFO L208 MainTranslator]: Completed translation [2021-05-03 00:44:00,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00 WrapperNode [2021-05-03 00:44:00,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-03 00:44:00,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 00:44:00,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 00:44:00,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 00:44:00,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (1/1) ... [2021-05-03 00:44:00,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (1/1) ... [2021-05-03 00:44:00,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (1/1) ... [2021-05-03 00:44:00,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (1/1) ... [2021-05-03 00:44:00,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (1/1) ... [2021-05-03 00:44:00,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (1/1) ... [2021-05-03 00:44:00,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (1/1) ... [2021-05-03 00:44:00,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 00:44:00,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 00:44:00,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 00:44:00,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 00:44:00,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (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 [2021-05-03 00:44:00,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-03 00:44:00,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 00:44:00,223 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-03 00:44:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-03 00:44:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-03 00:44:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-03 00:44:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-03 00:44:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-03 00:44:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-03 00:44:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-03 00:44:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-03 00:44:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-03 00:44:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-03 00:44:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-03 00:44:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-03 00:44:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-03 00:44:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 00:44:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-03 00:44:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-03 00:44:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-03 00:44:00,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 00:44:00,542 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-03 00:44:00,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:44:00 BoogieIcfgContainer [2021-05-03 00:44:00,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 00:44:00,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 00:44:00,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 00:44:00,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 00:44:00,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 12:43:59" (1/3) ... [2021-05-03 00:44:00,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7803e21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:44:00, skipping insertion in model container [2021-05-03 00:44:00,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:44:00" (2/3) ... [2021-05-03 00:44:00,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7803e21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:44:00, skipping insertion in model container [2021-05-03 00:44:00,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:44:00" (3/3) ... [2021-05-03 00:44:00,560 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound1.c [2021-05-03 00:44:00,565 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-03 00:44:00,568 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 00:44:00,585 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-03 00:44:00,614 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 00:44:00,614 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 00:44:00,614 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-03 00:44:00,615 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 00:44:00,615 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 00:44:00,615 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 00:44:00,615 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 00:44:00,615 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 00:44:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-03 00:44:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-03 00:44:00,645 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:44:00,646 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] [2021-05-03 00:44:00,646 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:44:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:44:00,652 INFO L82 PathProgramCache]: Analyzing trace with hash 774216096, now seen corresponding path program 1 times [2021-05-03 00:44:00,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:44:00,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51697373] [2021-05-03 00:44:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:44:00,711 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:44:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:44:00,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:44:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:44:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-03 00:44:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:44:00,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-03 00:44:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:44:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-03 00:44:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:44:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-03 00:44:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:44:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-03 00:44:00,914 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:44:00,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51697373] [2021-05-03 00:44:00,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [51697373] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:44:00,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:44:00,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 00:44:00,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965069606] [2021-05-03 00:44:00,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 00:44:00,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:44:00,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 00:44:00,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:44:00,932 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-03 00:44:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:44:01,058 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2021-05-03 00:44:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 00:44:01,060 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 [2021-05-03 00:44:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:44:01,067 INFO L225 Difference]: With dead ends: 57 [2021-05-03 00:44:01,067 INFO L226 Difference]: Without dead ends: 27 [2021-05-03 00:44:01,070 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:44:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-03 00:44:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-03 00:44:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-03 00:44:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-03 00:44:01,124 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2021-05-03 00:44:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:44:01,124 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-03 00:44:01,124 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) [2021-05-03 00:44:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-03 00:44:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-03 00:44:01,126 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:44:01,126 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] [2021-05-03 00:44:01,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 00:44:01,126 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:44:01,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:44:01,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1105237916, now seen corresponding path program 1 times [2021-05-03 00:44:01,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:44:01,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266221069] [2021-05-03 00:44:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:44:01,131 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:44:01,150 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-03 00:44:01,150 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-03 00:44:01,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 00:44:01,165 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-03 00:44:01,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 12:44:01 BoogieIcfgContainer [2021-05-03 00:44:01,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 00:44:01,167 INFO L168 Benchmark]: Toolchain (without parser) took 1294.17 ms. Allocated memory is still 216.0 MB. Free memory was 181.3 MB in the beginning and 192.6 MB in the end (delta: -11.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:44:01,167 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 216.0 MB. Free memory is still 197.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:44:01,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.81 ms. Allocated memory is still 216.0 MB. Free memory was 181.1 MB in the beginning and 199.1 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-05-03 00:44:01,169 INFO L168 Benchmark]: Boogie Preprocessor took 36.02 ms. Allocated memory is still 216.0 MB. Free memory was 199.1 MB in the beginning and 197.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-03 00:44:01,169 INFO L168 Benchmark]: RCFGBuilder took 403.31 ms. Allocated memory is still 216.0 MB. Free memory was 197.4 MB in the beginning and 182.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-03 00:44:01,170 INFO L168 Benchmark]: TraceAbstraction took 620.26 ms. Allocated memory is still 216.0 MB. Free memory was 182.4 MB in the beginning and 192.6 MB in the end (delta: -10.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:44:01,173 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 216.0 MB. Free memory is still 197.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 228.81 ms. Allocated memory is still 216.0 MB. Free memory was 181.1 MB in the beginning and 199.1 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.02 ms. Allocated memory is still 216.0 MB. Free memory was 199.1 MB in the beginning and 197.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 403.31 ms. Allocated memory is still 216.0 MB. Free memory was 197.4 MB in the beginning and 182.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 620.26 ms. Allocated memory is still 216.0 MB. Free memory was 182.4 MB in the beginning and 192.6 MB in the end (delta: -10.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 18]: 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] int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(z>=0 && z<=1) [L13] COND FALSE !(!cond) [L26] RET assume_abort_if_not(z>=0 && z<=1) [L27] k = __VERIFIER_nondet_int() [L28] CALL assume_abort_if_not(k>=0 && k<=1) [L13] COND FALSE !(!cond) [L28] RET assume_abort_if_not(k>=0 && k<=1) [L29] CALL assume_abort_if_not(z >= 1) [L13] COND FALSE !(!cond) [L29] RET assume_abort_if_not(z >= 1) [L30] CALL assume_abort_if_not(k >= 1) [L13] COND FALSE !(!cond) [L30] RET assume_abort_if_not(k >= 1) [L32] x = 1 [L33] y = z [L34] c = 1 [L36] COND TRUE 1 [L37] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 542.9ms, OverallIterations: 2, TraceHistogramMax: 4, EmptinessCheckTime: 17.5ms, AutomataDifference: 148.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...