/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/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:41:37,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:41:37,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:41:37,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:41:37,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:41:37,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:41:37,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:41:37,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:41:37,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:41:37,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:41:37,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:41:37,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:41:37,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:41:37,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:41:37,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:41:37,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:41:37,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:41:37,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:41:37,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:41:37,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:41:37,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:41:37,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:41:37,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:41:37,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:41:37,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:41:37,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:41:37,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:41:37,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:41:37,898 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 18:41:37,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:41:37,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:41:37,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:41:37,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:41:37,932 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:41:37,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:41:37,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:41:37,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:41:37,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:41:37,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:41:37,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:41:37,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:41:37,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:41:37,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:41:37,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:41:37,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:41:37,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:41:37,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:41:37,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:41:37,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:41:37,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:41:37,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:41:37,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:41:37,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:41:37,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:41:37,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:41:37,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:41:37,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:41:37,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:41:37,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:41:38,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:41:38,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:41:38,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:41:38,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:41:38,367 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:41:38,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-10-23 18:41:38,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51418c049/7ed1eb2150a54d0aa7e091913ccc9dad/FLAGd46906f91 [2020-10-23 18:41:39,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:41:39,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs3f.c [2020-10-23 18:41:39,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51418c049/7ed1eb2150a54d0aa7e091913ccc9dad/FLAGd46906f91 [2020-10-23 18:41:39,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51418c049/7ed1eb2150a54d0aa7e091913ccc9dad [2020-10-23 18:41:39,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:41:39,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:41:39,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:39,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:41:39,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:41:39,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201d1508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39, skipping insertion in model container [2020-10-23 18:41:39,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:41:39,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:41:39,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:39,706 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:41:39,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:39,747 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:41:39,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39 WrapperNode [2020-10-23 18:41:39,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:39,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:41:39,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:41:39,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:41:39,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (1/1) ... [2020-10-23 18:41:39,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:41:39,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:41:39,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:41:39,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:41:39,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (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 18:41:39,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:41:39,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:41:39,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:41:39,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:41:39,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:41:39,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:41:39,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:41:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:41:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:41:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:41:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:41:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:41:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:41:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:41:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:41:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:41:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:41:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:41:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:41:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:41:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:41:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:41:40,333 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:41:40,333 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 18:41:40,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:40 BoogieIcfgContainer [2020-10-23 18:41:40,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:41:40,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:41:40,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:41:40,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:41:40,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:41:39" (1/3) ... [2020-10-23 18:41:40,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b5d6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:40, skipping insertion in model container [2020-10-23 18:41:40,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:39" (2/3) ... [2020-10-23 18:41:40,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b5d6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:40, skipping insertion in model container [2020-10-23 18:41:40,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:40" (3/3) ... [2020-10-23 18:41:40,345 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-10-23 18:41:40,358 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:41:40,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:41:40,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:41:40,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:41:40,406 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:41:40,406 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:41:40,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:41:40,406 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:41:40,406 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:41:40,406 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:41:40,407 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:41:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-23 18:41:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:41:40,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:40,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:41:40,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:40,440 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-23 18:41:40,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:40,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204151543] [2020-10-23 18:41:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:40,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204151543] [2020-10-23 18:41:40,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:40,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:41:40,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563147434] [2020-10-23 18:41:40,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:41:40,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:40,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:41:40,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:41:40,778 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-23 18:41:40,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:40,914 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-23 18:41:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:41:40,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-23 18:41:40,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:40,925 INFO L225 Difference]: With dead ends: 61 [2020-10-23 18:41:40,925 INFO L226 Difference]: Without dead ends: 27 [2020-10-23 18:41:40,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:41:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-23 18:41:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-23 18:41:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 18:41:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-23 18:41:40,975 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-23 18:41:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:40,976 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-23 18:41:40,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:41:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-23 18:41:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:41:40,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:40,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:41:40,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:41:40,978 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:40,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-23 18:41:40,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:40,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007532130] [2020-10-23 18:41:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:41,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:41,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:41,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007532130] [2020-10-23 18:41:41,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:41,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:41:41,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692007804] [2020-10-23 18:41:41,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:41:41,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:41,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:41:41,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:41:41,148 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-23 18:41:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:41,400 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-10-23 18:41:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:41:41,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-23 18:41:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:41,402 INFO L225 Difference]: With dead ends: 47 [2020-10-23 18:41:41,402 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 18:41:41,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:41:41,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 18:41:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-23 18:41:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 18:41:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-23 18:41:41,413 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2020-10-23 18:41:41,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:41,414 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-23 18:41:41,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:41:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-23 18:41:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:41:41,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:41,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:41:41,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:41:41,416 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:41,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:41,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-23 18:41:41,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:41,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039227869] [2020-10-23 18:41:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:41:41,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039227869] [2020-10-23 18:41:41,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:41,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 18:41:41,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191073268] [2020-10-23 18:41:41,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:41:41,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:41,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:41:41,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:41:41,758 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-10-23 18:41:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:42,171 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-23 18:41:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:41:42,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-23 18:41:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:42,173 INFO L225 Difference]: With dead ends: 41 [2020-10-23 18:41:42,173 INFO L226 Difference]: Without dead ends: 34 [2020-10-23 18:41:42,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-23 18:41:42,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-23 18:41:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-23 18:41:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 18:41:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-23 18:41:42,183 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2020-10-23 18:41:42,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:42,183 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-23 18:41:42,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:41:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-23 18:41:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 18:41:42,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:42,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:41:42,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:41:42,185 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:42,186 INFO L82 PathProgramCache]: Analyzing trace with hash 427046459, now seen corresponding path program 1 times [2020-10-23 18:41:42,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:42,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122160879] [2020-10-23 18:41:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:42,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122160879] [2020-10-23 18:41:42,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805491727] [2020-10-23 18:41:42,337 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 18:41:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:42,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-23 18:41:42,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:41:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:42,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:41:42,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-10-23 18:41:42,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766943154] [2020-10-23 18:41:42,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 18:41:42,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 18:41:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:41:42,536 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 11 states. [2020-10-23 18:41:42,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:42,771 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-10-23 18:41:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 18:41:42,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-23 18:41:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:42,773 INFO L225 Difference]: With dead ends: 57 [2020-10-23 18:41:42,773 INFO L226 Difference]: Without dead ends: 40 [2020-10-23 18:41:42,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:41:42,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-23 18:41:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-10-23 18:41:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 18:41:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-23 18:41:42,782 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 31 [2020-10-23 18:41:42,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:42,782 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-23 18:41:42,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 18:41:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-23 18:41:42,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-23 18:41:42,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:42,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:41:42,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:41:42,998 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:42,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914284, now seen corresponding path program 1 times [2020-10-23 18:41:43,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:43,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667816330] [2020-10-23 18:41:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:43,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:43,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:43,162 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:41:43,162 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:41:43,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 18:41:43,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:41:43 BoogieIcfgContainer [2020-10-23 18:41:43,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:41:43,223 INFO L168 Benchmark]: Toolchain (without parser) took 3761.99 ms. Allocated memory was 125.8 MB in the beginning and 158.3 MB in the end (delta: 32.5 MB). Free memory was 101.7 MB in the beginning and 64.2 MB in the end (delta: 37.5 MB). Peak memory consumption was 71.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:43,224 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:41:43,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.65 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 91.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:43,225 INFO L168 Benchmark]: Boogie Preprocessor took 43.04 ms. Allocated memory is still 125.8 MB. Free memory was 91.3 MB in the beginning and 89.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:43,226 INFO L168 Benchmark]: RCFGBuilder took 541.73 ms. Allocated memory was 125.8 MB in the beginning and 158.3 MB in the end (delta: 32.5 MB). Free memory was 89.8 MB in the beginning and 140.3 MB in the end (delta: -50.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:43,227 INFO L168 Benchmark]: TraceAbstraction took 2883.24 ms. Allocated memory is still 158.3 MB. Free memory was 140.3 MB in the beginning and 64.2 MB in the end (delta: 76.0 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:43,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.65 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 91.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.04 ms. Allocated memory is still 125.8 MB. Free memory was 91.3 MB in the beginning and 89.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 541.73 ms. Allocated memory was 125.8 MB in the beginning and 158.3 MB in the end (delta: 32.5 MB). Free memory was 89.8 MB in the beginning and 140.3 MB in the end (delta: -50.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2883.24 ms. Allocated memory is still 158.3 MB. Free memory was 140.3 MB in the beginning and 64.2 MB in the end (delta: 76.0 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=2, sum={5:0}] [L31] COND TRUE i