/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:26:41,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:26:41,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:26:41,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:26:41,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:26:41,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:26:41,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:26:41,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:26:41,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:26:41,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:26:41,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:26:41,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:26:41,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:26:41,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:26:41,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:26:41,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:26:41,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:26:41,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:26:41,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:26:41,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:26:41,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:26:41,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:26:41,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:26:41,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:26:41,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:26:41,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:26:41,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:26:41,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:26:41,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:26:41,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:26:41,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:26:41,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:26:41,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:26:41,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:26:41,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:26:41,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:26:41,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:26:41,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:26:41,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:26:41,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:26:41,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:26:41,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:26:41,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:26:41,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:26:41,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:26:41,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:26:41,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:26:41,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:26:41,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:26:41,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:26:41,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:26:41,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:26:41,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:26:41,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:26:41,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:26:41,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:26:41,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:26:41,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:26:41,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:26:42,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:26:42,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:26:42,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:26:42,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:26:42,461 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:26:42,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-10-23 18:26:42,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7ab10c1/d7720fd96c384c35a1b3b5af2c1e5807/FLAG745c67161 [2020-10-23 18:26:43,111 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:26:43,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-10-23 18:26:43,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7ab10c1/d7720fd96c384c35a1b3b5af2c1e5807/FLAG745c67161 [2020-10-23 18:26:43,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7ab10c1/d7720fd96c384c35a1b3b5af2c1e5807 [2020-10-23 18:26:43,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:26:43,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:26:43,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:26:43,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:26:43,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:26:43,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55aaacd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43, skipping insertion in model container [2020-10-23 18:26:43,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:26:43,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:26:43,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:26:43,731 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:26:43,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:26:43,795 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:26:43,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43 WrapperNode [2020-10-23 18:26:43,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:26:43,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:26:43,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:26:43,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:26:43,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (1/1) ... [2020-10-23 18:26:43,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:26:43,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:26:43,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:26:43,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:26:43,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (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 [2020-10-23 18:26:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:26:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:26:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:26:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-23 18:26:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-23 18:26:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-23 18:26:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:26:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:26:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:26:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:26:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:26:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:26:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-23 18:26:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-23 18:26:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:26:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-23 18:26:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 18:26:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:26:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:26:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:26:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:26:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:26:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:26:44,474 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:26:44,475 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:26:44,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:44 BoogieIcfgContainer [2020-10-23 18:26:44,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:26:44,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:26:44,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:26:44,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:26:44,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:26:43" (1/3) ... [2020-10-23 18:26:44,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f46766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:44, skipping insertion in model container [2020-10-23 18:26:44,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:43" (2/3) ... [2020-10-23 18:26:44,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f46766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:44, skipping insertion in model container [2020-10-23 18:26:44,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:44" (3/3) ... [2020-10-23 18:26:44,491 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-10-23 18:26:44,505 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:26:44,511 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:26:44,527 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:26:44,575 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:26:44,575 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:26:44,575 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:26:44,575 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:26:44,576 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:26:44,576 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:26:44,576 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:26:44,576 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:26:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-23 18:26:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-23 18:26:44,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:44,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:44,608 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:44,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:44,617 INFO L82 PathProgramCache]: Analyzing trace with hash -881056993, now seen corresponding path program 1 times [2020-10-23 18:26:44,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:44,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579987200] [2020-10-23 18:26:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:44,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:44,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 18:26:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 18:26:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:26:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-23 18:26:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 18:26:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:26:45,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579987200] [2020-10-23 18:26:45,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:26:45,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:26:45,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450166271] [2020-10-23 18:26:45,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:26:45,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:26:45,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:26:45,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:26:45,056 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-10-23 18:26:45,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:26:45,285 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-10-23 18:26:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:26:45,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-23 18:26:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:26:45,296 INFO L225 Difference]: With dead ends: 54 [2020-10-23 18:26:45,296 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 18:26:45,300 INFO L677 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 [2020-10-23 18:26:45,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 18:26:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-23 18:26:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 18:26:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-23 18:26:45,353 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38 [2020-10-23 18:26:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:26:45,355 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-23 18:26:45,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:26:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-23 18:26:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 18:26:45,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:45,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:45,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:26:45,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:45,359 INFO L82 PathProgramCache]: Analyzing trace with hash 161769528, now seen corresponding path program 1 times [2020-10-23 18:26:45,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:45,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058062263] [2020-10-23 18:26:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 18:26:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 18:26:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:26:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-23 18:26:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 18:26:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-23 18:26:45,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058062263] [2020-10-23 18:26:45,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:26:45,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:26:45,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582507151] [2020-10-23 18:26:45,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:26:45,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:26:45,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:26:45,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:26:45,539 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-23 18:26:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:26:45,806 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-23 18:26:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:26:45,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-23 18:26:45,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:26:45,808 INFO L225 Difference]: With dead ends: 44 [2020-10-23 18:26:45,808 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 18:26:45,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:26:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 18:26:45,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-23 18:26:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 18:26:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-23 18:26:45,822 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 39 [2020-10-23 18:26:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:26:45,823 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-23 18:26:45,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:26:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-23 18:26:45,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 18:26:45,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:45,827 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:45,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:26:45,828 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:45,830 INFO L82 PathProgramCache]: Analyzing trace with hash -96395910, now seen corresponding path program 1 times [2020-10-23 18:26:45,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:45,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529384892] [2020-10-23 18:26:45,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-23 18:26:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 18:26:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 18:26:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-23 18:26:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 18:26:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-23 18:26:46,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529384892] [2020-10-23 18:26:46,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548080717] [2020-10-23 18:26:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:26:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:46,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 60 conjunts are in the unsatisfiable core [2020-10-23 18:26:46,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:26:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-23 18:26:46,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:26:46,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 26 [2020-10-23 18:26:46,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623033527] [2020-10-23 18:26:46,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-23 18:26:46,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:26:46,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-23 18:26:46,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-23 18:26:46,927 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 26 states. [2020-10-23 18:26:48,197 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-23 18:26:48,506 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-23 18:26:48,766 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-23 18:26:48,977 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-23 18:26:49,336 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-23 18:26:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:26:49,863 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-10-23 18:26:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 18:26:49,864 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 39 [2020-10-23 18:26:49,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:26:49,868 INFO L225 Difference]: With dead ends: 90 [2020-10-23 18:26:49,868 INFO L226 Difference]: Without dead ends: 81 [2020-10-23 18:26:49,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=272, Invalid=1708, Unknown=0, NotChecked=0, Total=1980 [2020-10-23 18:26:49,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-23 18:26:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 44. [2020-10-23 18:26:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-23 18:26:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-23 18:26:49,904 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 39 [2020-10-23 18:26:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:26:49,904 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-23 18:26:49,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-23 18:26:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-23 18:26:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 18:26:49,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:49,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:50,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:26:50,125 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:50,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1684743812, now seen corresponding path program 1 times [2020-10-23 18:26:50,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:50,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658885379] [2020-10-23 18:26:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:26:50,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:26:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:26:50,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:26:50,226 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:26:50,226 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:26:50,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 18:26:50,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:26:50 BoogieIcfgContainer [2020-10-23 18:26:50,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:26:50,281 INFO L168 Benchmark]: Toolchain (without parser) took 6788.93 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 130.7 MB in the beginning and 120.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 79.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:50,282 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 155.2 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:26:50,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.15 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 119.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:50,286 INFO L168 Benchmark]: Boogie Preprocessor took 86.13 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 118.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:50,287 INFO L168 Benchmark]: RCFGBuilder took 588.18 ms. Allocated memory is still 155.2 MB. Free memory was 117.9 MB in the beginning and 138.4 MB in the end (delta: -20.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:50,288 INFO L168 Benchmark]: TraceAbstraction took 5795.87 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 137.9 MB in the beginning and 120.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 86.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:50,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 155.2 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.15 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 119.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.13 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 118.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 588.18 ms. Allocated memory is still 155.2 MB. Free memory was 117.9 MB in the beginning and 138.4 MB in the end (delta: -20.5 MB). Peak memory consumption was 21.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5795.87 ms. Allocated memory was 155.2 MB in the beginning and 224.4 MB in the end (delta: 69.2 MB). Free memory was 137.9 MB in the beginning and 120.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 86.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] struct dummy d1, d2; VAL [\old(d1)=52, \old(d1)=60, \old(d2)=54, \old(d2)=58, d1={6:0}, d2={5:0}] [L34] CALL init() VAL [d1={6:0}, d2={5:0}] [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L34] RET init() VAL [d1={6:0}, d2={5:0}] [L35] CALL, EXPR get_dummy() VAL [d1={6:0}, d2={5:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={6:0}, d1={6:0}, d2={5:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() VAL [d1={6:0}, d2={5:0}, get_dummy()={6:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L35] CALL, EXPR get_dummy() VAL [d1={6:0}, d2={5:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={6:0}, d1={6:0}, d2={5:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() VAL [d1={6:0}, d2={5:0}, get_dummy()={6:0}, pd1={6:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L35] CALL, EXPR get_dummy() VAL [d1={6:0}, d2={5:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=0, __VERIFIER_nondet_bool() ? &d1 : &d2={5:0}, d1={6:0}, d2={5:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() VAL [d1={6:0}, d2={5:0}, get_dummy()={5:0}, pd1={6:0}, pd2={6:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L36] int i = __VERIFIER_nondet_int(); [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L37] EXPR (*pd2).a [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [(*pd2).a=10, d1={6:0}, d2={5:0}, i=0, pd1={6:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={6:0}, pd3={5:0}] [L37] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L38] int *pa = &pd1->a; [L39] EXPR pd3->a [L39] i = pd3->a - 10 [L40] EXPR \read(*pa) VAL [\read(*pa)=10, d1={6:0}, d2={5:0}, i=13, pa={6:0}, pd1={6:0}, pd2={6:0}, pd3={5:0}] [L40] COND FALSE !(i < *pa) [L43] CALL, EXPR check(pd2, i) VAL [\old(i)=13, d1={6:0}, d2={5:0}, s1={6:0}] [L29] EXPR s1->a [L29] return s1->a == i; [L43] RET, EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={6:0}, d2={5:0}, i=13, pa={6:0}, pd1={6:0}, pd2={6:0}, pd3={5:0}] [L43] COND TRUE !check(pd2, i) [L50] CALL reach_error() VAL [d1={6:0}, d2={5:0}] [L3] __assert_fail("0", "test22-2.c", 3, "reach_error") VAL [d1={6:0}, d2={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 187 SDslu, 93 SDs, 0 SdLazy, 788 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 37 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 22567 SizeOfPredicates, 12 NumberOfNonLiveVariables, 232 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 42/48 InterpolantCoveringCapability, 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...