/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 06:53:43,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 06:53:43,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 06:53:43,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 06:53:43,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 06:53:43,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 06:53:43,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 06:53:43,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 06:53:43,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 06:53:43,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 06:53:43,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 06:53:43,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 06:53:43,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 06:53:43,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 06:53:43,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 06:53:43,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 06:53:43,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 06:53:43,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 06:53:43,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 06:53:43,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 06:53:43,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 06:53:43,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 06:53:43,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 06:53:43,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 06:53:43,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 06:53:43,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 06:53:43,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 06:53:43,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 06:53:43,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 06:53:43,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 06:53:43,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 06:53:43,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 06:53:43,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 06:53:43,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 06:53:43,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 06:53:43,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 06:53:43,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 06:53:43,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 06:53:43,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 06:53:43,581 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 06:53:43,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 06:53:43,581 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 06:53:43,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 06:53:43,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 06:53:43,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 06:53:43,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 06:53:43,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 06:53:43,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:53:43,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 06:53:43,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 06:53:43,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 06:53:43,582 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 06:53:43,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 06:53:43,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 06:53:43,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 06:53:43,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 06:53:43,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 06:53:43,877 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 06:53:43,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2021-05-01 06:53:43,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f83889b/4aa5af8b1f2f49c69baaf1682af6369d/FLAGba344e861 [2021-05-01 06:53:44,232 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 06:53:44,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2021-05-01 06:53:44,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f83889b/4aa5af8b1f2f49c69baaf1682af6369d/FLAGba344e861 [2021-05-01 06:53:44,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98f83889b/4aa5af8b1f2f49c69baaf1682af6369d [2021-05-01 06:53:44,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 06:53:44,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 06:53:44,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 06:53:44,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 06:53:44,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 06:53:44,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dabd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44, skipping insertion in model container [2021-05-01 06:53:44,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 06:53:44,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 06:53:44,799 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c[327,340] [2021-05-01 06:53:44,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:53:44,816 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 06:53:44,834 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c[327,340] [2021-05-01 06:53:44,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:53:44,849 INFO L208 MainTranslator]: Completed translation [2021-05-01 06:53:44,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44 WrapperNode [2021-05-01 06:53:44,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 06:53:44,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 06:53:44,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 06:53:44,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 06:53:44,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (1/1) ... [2021-05-01 06:53:44,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 06:53:44,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 06:53:44,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 06:53:44,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 06:53:44,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (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 [2021-05-01 06:53:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 06:53:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 06:53:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 06:53:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 06:53:44,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 06:53:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 06:53:44,996 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 06:53:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 06:53:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 06:53:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 06:53:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 06:53:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 06:53:44,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 06:53:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 06:53:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 06:53:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 06:53:44,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 06:53:44,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 06:53:45,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 06:53:45,244 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 06:53:45,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:53:45 BoogieIcfgContainer [2021-05-01 06:53:45,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 06:53:45,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 06:53:45,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 06:53:45,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 06:53:45,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 06:53:44" (1/3) ... [2021-05-01 06:53:45,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8515778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:53:45, skipping insertion in model container [2021-05-01 06:53:45,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:44" (2/3) ... [2021-05-01 06:53:45,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8515778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:53:45, skipping insertion in model container [2021-05-01 06:53:45,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:53:45" (3/3) ... [2021-05-01 06:53:45,252 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2021-05-01 06:53:45,273 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 06:53:45,276 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 06:53:45,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 06:53:45,311 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 06:53:45,311 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 06:53:45,311 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 06:53:45,311 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 06:53:45,311 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 06:53:45,312 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 06:53:45,312 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 06:53:45,312 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 06:53:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:53:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 06:53:45,337 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:53:45,338 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:53:45,338 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:53:45,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:53:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1706373939, now seen corresponding path program 1 times [2021-05-01 06:53:45,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:53:45,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018215262] [2021-05-01 06:53:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:53:45,406 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:53:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:45,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:45,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:45,555 INFO L142 QuantifierPusher]: treesize reduction 24, result has 4.0 percent of original size [2021-05-01 06:53:45,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:45,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-05-01 06:53:45,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:53:45,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:53:45,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:45,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 06:53:45,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:45,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:53:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:45,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:45,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:53:45,718 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:53:45,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018215262] [2021-05-01 06:53:45,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2018215262] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:53:45,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:53:45,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 06:53:45,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769309330] [2021-05-01 06:53:45,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 06:53:45,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:53:45,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 06:53:45,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-01 06:53:45,739 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:53:46,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:53:46,021 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-05-01 06:53:46,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-01 06:53:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 06:53:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:53:46,027 INFO L225 Difference]: With dead ends: 40 [2021-05-01 06:53:46,027 INFO L226 Difference]: Without dead ends: 13 [2021-05-01 06:53:46,029 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 273.7ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-01 06:53:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-01 06:53:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-01 06:53:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:53:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-01 06:53:46,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-01 06:53:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:53:46,052 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-01 06:53:46,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:53:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-01 06:53:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 06:53:46,053 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:53:46,053 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:53:46,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 06:53:46,053 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:53:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:53:46,054 INFO L82 PathProgramCache]: Analyzing trace with hash 931642645, now seen corresponding path program 1 times [2021-05-01 06:53:46,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:53:46,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151721534] [2021-05-01 06:53:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:53:46,056 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:53:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 06:53:46,068 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 06:53:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 06:53:46,078 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 06:53:46,093 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-05-01 06:53:46,093 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 06:53:46,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 06:53:46,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 06:53:46 BoogieIcfgContainer [2021-05-01 06:53:46,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 06:53:46,103 INFO L168 Benchmark]: Toolchain (without parser) took 1421.64 ms. Allocated memory is still 187.7 MB. Free memory was 153.7 MB in the beginning and 148.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:46,104 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 187.7 MB. Free memory is still 170.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 06:53:46,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.43 ms. Allocated memory is still 187.7 MB. Free memory was 153.5 MB in the beginning and 144.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:46,105 INFO L168 Benchmark]: Boogie Preprocessor took 67.71 ms. Allocated memory is still 187.7 MB. Free memory was 144.2 MB in the beginning and 172.4 MB in the end (delta: -28.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:46,105 INFO L168 Benchmark]: RCFGBuilder took 325.84 ms. Allocated memory is still 187.7 MB. Free memory was 172.4 MB in the beginning and 159.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:46,105 INFO L168 Benchmark]: TraceAbstraction took 855.86 ms. Allocated memory is still 187.7 MB. Free memory was 159.1 MB in the beginning and 148.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:46,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 187.7 MB. Free memory is still 170.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 167.43 ms. Allocated memory is still 187.7 MB. Free memory was 153.5 MB in the beginning and 144.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.71 ms. Allocated memory is still 187.7 MB. Free memory was 144.2 MB in the beginning and 172.4 MB in the end (delta: -28.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 325.84 ms. Allocated memory is still 187.7 MB. Free memory was 172.4 MB in the beginning and 159.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 855.86 ms. Allocated memory is still 187.7 MB. Free memory was 159.1 MB in the beginning and 148.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L16] int y=__VERIFIER_nondet_int(); [L18] COND TRUE y>0 [L20] COND FALSE !(x<100) [L25] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 785.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 15.5ms, AutomataDifference: 302.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 25 SDslu, 23 SDs, 0 SdLazy, 49 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 273.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.8ms 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 proved your program to be incorrect! Received shutdown request...