/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:40:34,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:40:34,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:40:34,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:40:34,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:40:34,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:40:34,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:40:34,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:40:34,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:40:34,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:40:34,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:40:34,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:40:34,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:40:34,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:40:34,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:40:34,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:40:34,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:40:34,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:40:34,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:40:34,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:40:34,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:40:34,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:40:34,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:40:34,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:40:34,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:40:34,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:40:34,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:40:34,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:40:34,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:40:34,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:40:34,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:40:34,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:40:34,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:40:34,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:40:34,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:40:34,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:40:34,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:40:34,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:40:34,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:40:34,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:40:34,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:40:34,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:40:34,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:40:34,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:40:34,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:40:34,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:40:34,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:40:34,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:40:34,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:40:34,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:40:34,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:40:34,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:40:34,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:40:34,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:40:34,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:40:34,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:40:34,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:40:34,842 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:40:34,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:40:34,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:40:34,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:40:34,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:40:34,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:40:34,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:40:34,843 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:40:35,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:40:35,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:40:35,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:40:35,341 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:40:35,342 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:40:35,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-04 16:40:35,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69ca69c4d/bca334724ad84accbea03c971bfc8070/FLAGeaf79282d [2020-09-04 16:40:36,013 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:40:36,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-09-04 16:40:36,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69ca69c4d/bca334724ad84accbea03c971bfc8070/FLAGeaf79282d [2020-09-04 16:40:36,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69ca69c4d/bca334724ad84accbea03c971bfc8070 [2020-09-04 16:40:36,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:40:36,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:40:36,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:40:36,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:40:36,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:40:36,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a874bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36, skipping insertion in model container [2020-09-04 16:40:36,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:40:36,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:40:36,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:40:36,685 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:40:36,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:40:36,729 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:40:36,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36 WrapperNode [2020-09-04 16:40:36,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:40:36,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:40:36,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:40:36,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:40:36,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (1/1) ... [2020-09-04 16:40:36,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:40:36,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:40:36,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:40:36,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:40:36,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:40:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:40:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:40:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-04 16:40:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-04 16:40:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-04 16:40:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:40:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:40:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:40:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 16:40:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-04 16:40:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:40:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-04 16:40:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-04 16:40:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:40:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:40:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:40:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:40:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 16:40:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:40:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:40:37,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:40:37,411 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 16:40:37,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:40:37 BoogieIcfgContainer [2020-09-04 16:40:37,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:40:37,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:40:37,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:40:37,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:40:37,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:40:36" (1/3) ... [2020-09-04 16:40:37,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c87ed40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:40:37, skipping insertion in model container [2020-09-04 16:40:37,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:40:36" (2/3) ... [2020-09-04 16:40:37,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c87ed40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:40:37, skipping insertion in model container [2020-09-04 16:40:37,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:40:37" (3/3) ... [2020-09-04 16:40:37,427 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-09-04 16:40:37,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:40:37,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:40:37,470 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:40:37,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:40:37,497 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:40:37,497 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:40:37,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:40:37,497 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:40:37,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:40:37,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:40:37,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:40:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-04 16:40:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-04 16:40:37,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:37,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:37,531 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:37,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2026025413, now seen corresponding path program 1 times [2020-09-04 16:40:37,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:37,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359221784] [2020-09-04 16:40:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:37,628 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:37,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-04 16:40:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:37,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 16:40:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-04 16:40:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:37,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-04 16:40:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-04 16:40:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-04 16:40:38,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359221784] [2020-09-04 16:40:38,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:38,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:40:38,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165097526] [2020-09-04 16:40:38,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:40:38,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:38,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:40:38,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:40:38,071 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-09-04 16:40:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:38,558 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-09-04 16:40:38,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:40:38,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-09-04 16:40:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:38,576 INFO L225 Difference]: With dead ends: 107 [2020-09-04 16:40:38,576 INFO L226 Difference]: Without dead ends: 79 [2020-09-04 16:40:38,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:40:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-04 16:40:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-04 16:40:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-04 16:40:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-09-04 16:40:38,650 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 83 [2020-09-04 16:40:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:38,653 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-09-04 16:40:38,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:40:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-09-04 16:40:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 16:40:38,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:38,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:38,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:40:38,658 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:38,659 INFO L82 PathProgramCache]: Analyzing trace with hash 177245466, now seen corresponding path program 1 times [2020-09-04 16:40:38,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:38,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052503154] [2020-09-04 16:40:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:38,664 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-04 16:40:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 16:40:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-04 16:40:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-04 16:40:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-04 16:40:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-04 16:40:38,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052503154] [2020-09-04 16:40:38,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:38,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:40:38,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654647929] [2020-09-04 16:40:38,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:40:38,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:38,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:40:38,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:40:38,970 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 5 states. [2020-09-04 16:40:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:39,323 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-09-04 16:40:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:40:39,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-04 16:40:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:39,326 INFO L225 Difference]: With dead ends: 106 [2020-09-04 16:40:39,326 INFO L226 Difference]: Without dead ends: 79 [2020-09-04 16:40:39,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:40:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-04 16:40:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-04 16:40:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-04 16:40:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-09-04 16:40:39,348 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 85 [2020-09-04 16:40:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:39,349 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-09-04 16:40:39,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:40:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-09-04 16:40:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 16:40:39,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:39,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:39,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:40:39,353 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:39,354 INFO L82 PathProgramCache]: Analyzing trace with hash 679818391, now seen corresponding path program 1 times [2020-09-04 16:40:39,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:39,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343224982] [2020-09-04 16:40:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:39,357 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:39,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-04 16:40:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:39,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 16:40:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-04 16:40:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:39,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-04 16:40:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-04 16:40:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 16:40:39,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343224982] [2020-09-04 16:40:39,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:39,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 16:40:39,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971824855] [2020-09-04 16:40:39,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 16:40:39,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:39,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 16:40:39,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:40:39,749 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 14 states. [2020-09-04 16:40:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:41,385 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2020-09-04 16:40:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 16:40:41,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-04 16:40:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:41,398 INFO L225 Difference]: With dead ends: 167 [2020-09-04 16:40:41,398 INFO L226 Difference]: Without dead ends: 153 [2020-09-04 16:40:41,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-09-04 16:40:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-04 16:40:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 108. [2020-09-04 16:40:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-04 16:40:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2020-09-04 16:40:41,439 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 87 [2020-09-04 16:40:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:41,440 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2020-09-04 16:40:41,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 16:40:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2020-09-04 16:40:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 16:40:41,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:41,442 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:41,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:40:41,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:41,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2022406921, now seen corresponding path program 1 times [2020-09-04 16:40:41,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:41,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686365201] [2020-09-04 16:40:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:41,446 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:40:41,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:40:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:40:41,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:40:41,565 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:40:41,566 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:40:41,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:40:41,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:40:41 BoogieIcfgContainer [2020-09-04 16:40:41,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:40:41,596 INFO L168 Benchmark]: Toolchain (without parser) took 5199.19 ms. Allocated memory was 140.0 MB in the beginning and 278.4 MB in the end (delta: 138.4 MB). Free memory was 104.3 MB in the beginning and 249.4 MB in the end (delta: -145.1 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:41,597 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 16:40:41,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.31 ms. Allocated memory is still 140.0 MB. Free memory was 104.1 MB in the beginning and 93.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:41,599 INFO L168 Benchmark]: Boogie Preprocessor took 143.61 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 181.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:41,600 INFO L168 Benchmark]: RCFGBuilder took 543.14 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 159.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:41,601 INFO L168 Benchmark]: TraceAbstraction took 4173.18 ms. Allocated memory was 203.9 MB in the beginning and 278.4 MB in the end (delta: 74.4 MB). Free memory was 158.5 MB in the beginning and 249.4 MB in the end (delta: -90.9 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:41,605 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.31 ms. Allocated memory is still 140.0 MB. Free memory was 104.1 MB in the beginning and 93.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.61 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 181.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 543.14 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 159.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4173.18 ms. Allocated memory was 203.9 MB in the beginning and 278.4 MB in the end (delta: 74.4 MB). Free memory was 158.5 MB in the beginning and 249.4 MB in the end (delta: -90.9 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; [L32] CALL init() [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 395 SDslu, 76 SDs, 0 SdLazy, 1267 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 45 StatesRemovedByMinimization, 1 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...