/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 0.2.0-7d8eed3 [2020-11-06 22:29:06,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:29:06,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:29:06,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:29:06,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:29:06,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:29:06,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:29:06,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:29:06,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:29:06,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:29:06,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:29:06,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:29:06,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:29:06,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:29:06,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:29:06,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:29:06,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:29:06,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:29:06,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:29:06,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:29:06,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:29:06,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:29:06,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:29:06,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:29:06,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:29:06,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:29:06,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:29:06,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:29:06,869 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 [2020-11-06 22:29:06,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:29:06,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:29:06,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:29:06,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:29:06,935 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:29:06,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:29:06,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:29:06,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:29:06,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:29:06,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:29:06,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:29:06,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:29:06,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:29:06,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:29:06,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:29:06,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:29:06,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:29:06,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:29:06,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:29:06,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:29:06,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:29:06,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:29:06,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:29:06,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:29:06,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:29:06,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:29:06,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:29:06,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:29:06,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:29:06,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:29:07,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:29:07,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:29:07,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:29:07,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:29:07,424 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:29:07,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-11-06 22:29:07,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66b73cd20/ae38c165b09e47f1b2a5bde45a673ec3/FLAG008aa7736 [2020-11-06 22:29:08,201 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:29:08,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-11-06 22:29:08,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66b73cd20/ae38c165b09e47f1b2a5bde45a673ec3/FLAG008aa7736 [2020-11-06 22:29:08,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66b73cd20/ae38c165b09e47f1b2a5bde45a673ec3 [2020-11-06 22:29:08,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:29:08,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:29:08,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:29:08,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:29:08,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:29:08,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f3c115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08, skipping insertion in model container [2020-11-06 22:29:08,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:29:08,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:29:08,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:29:08,801 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:29:08,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:29:08,840 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:29:08,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08 WrapperNode [2020-11-06 22:29:08,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:29:08,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:29:08,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:29:08,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:29:08,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (1/1) ... [2020-11-06 22:29:08,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:29:08,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:29:08,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:29:08,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:29:08,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (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 [2020-11-06 22:29:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:29:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:29:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:29:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-11-06 22:29:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-11-06 22:29:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-11-06 22:29:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:29:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:29:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:29:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:29:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:29:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:29:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-06 22:29:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-11-06 22:29:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:29:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-11-06 22:29:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-06 22:29:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:29:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:29:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:29:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:29:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:29:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:29:09,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:29:09,436 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:29:09,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:09 BoogieIcfgContainer [2020-11-06 22:29:09,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:29:09,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:29:09,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:29:09,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:29:09,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:29:08" (1/3) ... [2020-11-06 22:29:09,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663e3bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:09, skipping insertion in model container [2020-11-06 22:29:09,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:08" (2/3) ... [2020-11-06 22:29:09,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663e3bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:09, skipping insertion in model container [2020-11-06 22:29:09,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:09" (3/3) ... [2020-11-06 22:29:09,448 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-11-06 22:29:09,468 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:29:09,472 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:29:09,486 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:29:09,516 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:29:09,516 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:29:09,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:29:09,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:29:09,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:29:09,517 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:29:09,517 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:29:09,517 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:29:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-06 22:29:09,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-06 22:29:09,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:29:09,546 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] [2020-11-06 22:29:09,547 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:29:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:29:09,554 INFO L82 PathProgramCache]: Analyzing trace with hash -881056993, now seen corresponding path program 1 times [2020-11-06 22:29:09,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:29:09,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909480073] [2020-11-06 22:29:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:29:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:09,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:29:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:09,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:29:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-06 22:29:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:29:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-06 22:29:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-06 22:29:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-06 22:29:10,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909480073] [2020-11-06 22:29:10,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:29:10,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:29:10,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654224369] [2020-11-06 22:29:10,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:29:10,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:29:10,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:29:10,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:29:10,070 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-11-06 22:29:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:29:10,360 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-11-06 22:29:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:29:10,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-11-06 22:29:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:29:10,372 INFO L225 Difference]: With dead ends: 54 [2020-11-06 22:29:10,372 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:29:10,376 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 [2020-11-06 22:29:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:29:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-06 22:29:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:29:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-06 22:29:10,431 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38 [2020-11-06 22:29:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:29:10,433 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-06 22:29:10,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:29:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-06 22:29:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 22:29:10,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:29:10,436 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] [2020-11-06 22:29:10,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:29:10,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:29:10,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:29:10,438 INFO L82 PathProgramCache]: Analyzing trace with hash 161769528, now seen corresponding path program 1 times [2020-11-06 22:29:10,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:29:10,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988251885] [2020-11-06 22:29:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:29:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:29:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:29:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-06 22:29:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:29:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-06 22:29:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-06 22:29:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-06 22:29:10,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988251885] [2020-11-06 22:29:10,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:29:10,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:29:10,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185208301] [2020-11-06 22:29:10,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:29:10,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:29:10,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:29:10,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:29:10,629 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-11-06 22:29:10,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:29:10,918 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-06 22:29:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:29:10,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-06 22:29:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:29:10,922 INFO L225 Difference]: With dead ends: 44 [2020-11-06 22:29:10,922 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:29:10,923 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 [2020-11-06 22:29:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:29:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-06 22:29:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:29:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-11-06 22:29:10,949 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 39 [2020-11-06 22:29:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:29:10,950 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-11-06 22:29:10,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:29:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-11-06 22:29:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 22:29:10,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:29:10,952 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] [2020-11-06 22:29:10,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:29:10,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:29:10,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:29:10,953 INFO L82 PathProgramCache]: Analyzing trace with hash -96395910, now seen corresponding path program 1 times [2020-11-06 22:29:10,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:29:10,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451290384] [2020-11-06 22:29:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:29:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:29:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:11,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-06 22:29:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:11,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-11-06 22:29:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 22:29:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:11,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-06 22:29:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-06 22:29:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 22:29:11,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451290384] [2020-11-06 22:29:11,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263425168] [2020-11-06 22:29:11,232 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 [2020-11-06 22:29:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:29:11,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 60 conjunts are in the unsatisfiable core [2020-11-06 22:29:11,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:29:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 22:29:11,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:29:11,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 26 [2020-11-06 22:29:11,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468475179] [2020-11-06 22:29:11,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-06 22:29:11,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:29:11,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-06 22:29:11,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-11-06 22:29:11,892 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 26 states. [2020-11-06 22:29:13,078 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-11-06 22:29:13,390 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-06 22:29:13,671 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-11-06 22:29:13,889 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-11-06 22:29:14,223 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-11-06 22:29:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:29:14,787 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-11-06 22:29:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-06 22:29:14,788 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 39 [2020-11-06 22:29:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:29:14,793 INFO L225 Difference]: With dead ends: 90 [2020-11-06 22:29:14,793 INFO L226 Difference]: Without dead ends: 81 [2020-11-06 22:29:14,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=272, Invalid=1708, Unknown=0, NotChecked=0, Total=1980 [2020-11-06 22:29:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-06 22:29:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 44. [2020-11-06 22:29:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-06 22:29:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-11-06 22:29:14,816 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 39 [2020-11-06 22:29:14,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:29:14,817 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-11-06 22:29:14,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-06 22:29:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-11-06 22:29:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 22:29:14,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:29:14,819 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] [2020-11-06 22:29:15,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:29:15,025 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:29:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:29:15,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1684743812, now seen corresponding path program 1 times [2020-11-06 22:29:15,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:29:15,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591456682] [2020-11-06 22:29:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:29:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:29:15,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:29:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:29:15,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:29:15,172 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:29:15,173 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:29:15,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:29:15,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:29:15 BoogieIcfgContainer [2020-11-06 22:29:15,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:29:15,270 INFO L168 Benchmark]: Toolchain (without parser) took 6701.98 ms. Allocated memory was 125.8 MB in the beginning and 162.5 MB in the end (delta: 36.7 MB). Free memory was 101.6 MB in the beginning and 91.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 48.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:29:15,272 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 66.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:29:15,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.02 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 91.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:29:15,275 INFO L168 Benchmark]: Boogie Preprocessor took 43.83 ms. Allocated memory is still 125.8 MB. Free memory was 91.2 MB in the beginning and 89.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:29:15,279 INFO L168 Benchmark]: RCFGBuilder took 552.51 ms. Allocated memory was 125.8 MB in the beginning and 162.5 MB in the end (delta: 36.7 MB). Free memory was 89.5 MB in the beginning and 139.7 MB in the end (delta: -50.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:29:15,281 INFO L168 Benchmark]: TraceAbstraction took 5825.68 ms. Allocated memory is still 162.5 MB. Free memory was 139.1 MB in the beginning and 91.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 48.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:29:15,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 66.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.02 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 91.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.83 ms. Allocated memory is still 125.8 MB. Free memory was 91.2 MB in the beginning and 89.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 552.51 ms. Allocated memory was 125.8 MB in the beginning and 162.5 MB in the end (delta: 36.7 MB). Free memory was 89.5 MB in the beginning and 139.7 MB in the end (delta: -50.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5825.68 ms. Allocated memory is still 162.5 MB. Free memory was 139.1 MB in the beginning and 91.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 48.5 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: 3.5s, 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, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.6s 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, 1.1s 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...