/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:18:03,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:18:03,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:18:03,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:18:03,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:18:03,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:18:03,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:18:03,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:18:03,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:18:03,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:18:03,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:18:03,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:18:03,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:18:03,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:18:03,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:18:03,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:18:03,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:18:03,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:18:03,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:18:03,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:18:03,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:18:03,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:18:03,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:18:03,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:18:03,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:18:03,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:18:03,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:18:03,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:18:03,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:18:03,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:18:03,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:18:03,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:18:03,714 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:18:03,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:18:03,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:18:03,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:18:03,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:18:03,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:18:03,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:18:03,716 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:18:03,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:18:03,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:18:03,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:18:03,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:18:03,720 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:18:03,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:18:03,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:18:03,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:18:03,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:18:03,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:18:03,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:18:03,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:18:04,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:18:04,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:18:04,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:18:04,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:18:04,219 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:18:04,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2021-02-21 21:18:04,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f28e241/e3ae7986459a4240945632589f85f71e/FLAG187e22fec [2021-02-21 21:18:05,023 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:18:05,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2021-02-21 21:18:05,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f28e241/e3ae7986459a4240945632589f85f71e/FLAG187e22fec [2021-02-21 21:18:05,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51f28e241/e3ae7986459a4240945632589f85f71e [2021-02-21 21:18:05,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:18:05,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:18:05,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:18:05,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:18:05,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:18:05,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2e4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05, skipping insertion in model container [2021-02-21 21:18:05,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:18:05,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:18:05,601 WARN L226 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] [2021-02-21 21:18:05,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:18:05,629 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:18:05,644 WARN L226 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] [2021-02-21 21:18:05,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:18:05,666 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:18:05,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05 WrapperNode [2021-02-21 21:18:05,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:18:05,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:18:05,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:18:05,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:18:05,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (1/1) ... [2021-02-21 21:18:05,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:18:05,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:18:05,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:18:05,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:18:05,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (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 [2021-02-21 21:18:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:18:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:18:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:18:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:18:05,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:18:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:18:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:18:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:18:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:18:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:18:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:18:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:18:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:18:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:18:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:18:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:18:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:18:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:18:06,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:18:06,195 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:18:06,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:18:06 BoogieIcfgContainer [2021-02-21 21:18:06,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:18:06,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:18:06,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:18:06,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:18:06,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:18:05" (1/3) ... [2021-02-21 21:18:06,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da0198a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:18:06, skipping insertion in model container [2021-02-21 21:18:06,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:05" (2/3) ... [2021-02-21 21:18:06,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da0198a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:18:06, skipping insertion in model container [2021-02-21 21:18:06,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:18:06" (3/3) ... [2021-02-21 21:18:06,253 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2021-02-21 21:18:06,272 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:18:06,290 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:18:06,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:18:06,387 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:18:06,387 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:18:06,387 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:18:06,387 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:18:06,388 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:18:06,388 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:18:06,388 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:18:06,388 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:18:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-21 21:18:06,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 21:18:06,420 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:18:06,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:18:06,422 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:18:06,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:18:06,430 INFO L82 PathProgramCache]: Analyzing trace with hash -631833344, now seen corresponding path program 1 times [2021-02-21 21:18:06,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:18:06,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912536018] [2021-02-21 21:18:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:18:06,535 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:18:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:06,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:06,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:06,844 WARN L141 QuantifierPusher]: treesize reduction 24, result has 4.0 percent of original size [2021-02-21 21:18:06,846 WARN L147 QuantifierPusher]: treesize reduction 24, result has 4.0 percent of original size 1 [2021-02-21 21:18:06,854 WARN L141 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-02-21 21:18:06,868 WARN L147 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size 3 [2021-02-21 21:18:06,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:06,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:18:06,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:06,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:18:06,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:06,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:07,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:18:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:07,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:07,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:18:07,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912536018] [2021-02-21 21:18:07,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:18:07,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:18:07,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115970684] [2021-02-21 21:18:07,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:18:07,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:18:07,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:18:07,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:18:07,144 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2021-02-21 21:18:07,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:18:07,540 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-02-21 21:18:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:18:07,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-02-21 21:18:07,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:18:07,552 INFO L225 Difference]: With dead ends: 54 [2021-02-21 21:18:07,553 INFO L226 Difference]: Without dead ends: 26 [2021-02-21 21:18:07,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:18:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-02-21 21:18:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-02-21 21:18:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-02-21 21:18:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-02-21 21:18:07,636 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2021-02-21 21:18:07,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:18:07,637 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-02-21 21:18:07,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:18:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-02-21 21:18:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 21:18:07,638 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:18:07,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:18:07,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:18:07,639 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:18:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:18:07,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1424749868, now seen corresponding path program 1 times [2021-02-21 21:18:07,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:18:07,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496521965] [2021-02-21 21:18:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:18:07,644 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:18:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:18:07,667 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:18:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:18:07,690 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:18:07,720 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:18:07,720 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:18:07,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:18:07,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:18:07 BoogieIcfgContainer [2021-02-21 21:18:07,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:18:07,741 INFO L168 Benchmark]: Toolchain (without parser) took 2367.98 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 128.2 MB in the end (delta: -287.3 kB). Peak memory consumption was 532.6 kB. Max. memory is 8.0 GB. [2021-02-21 21:18:07,742 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:18:07,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.96 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:07,748 INFO L168 Benchmark]: Boogie Preprocessor took 42.11 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 116.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:07,749 INFO L168 Benchmark]: RCFGBuilder took 489.68 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 102.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:07,750 INFO L168 Benchmark]: TraceAbstraction took 1509.37 ms. Allocated memory is still 151.0 MB. Free memory was 134.3 MB in the beginning and 128.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:07,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.96 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 117.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.11 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 116.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 489.68 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 102.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1509.37 ms. Allocated memory is still 151.0 MB. Free memory was 134.3 MB in the beginning and 128.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 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, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 31 SDslu, 48 SDs, 0 SdLazy, 69 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s 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...