/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/loop-lit/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:18,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:18,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:18,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:46:18,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:46:18,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:46:18,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:46:18,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:46:18,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:46:18,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:46:18,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:46:18,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:46:18,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:46:18,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:46:18,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:46:18,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:46:18,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:46:18,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:46:18,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:46:18,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:46:18,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:46:18,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:46:18,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:46:18,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:46:18,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:46:18,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:18,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:18,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:18,836 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 22:46:18,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:18,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:18,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:18,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:18,899 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:18,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:18,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:18,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:18,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:18,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:18,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:18,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:18,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:18,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:18,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:18,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:18,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:18,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:18,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:18,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:18,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:18,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:18,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:18,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:18,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:18,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:18,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:18,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:18,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:18,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:19,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:19,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:19,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:19,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:19,362 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:19,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-11-06 22:46:19,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3c91e39e/1f734918c73b43b8b729905625b401c6/FLAGb916ced18 [2020-11-06 22:46:20,142 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:20,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-11-06 22:46:20,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3c91e39e/1f734918c73b43b8b729905625b401c6/FLAGb916ced18 [2020-11-06 22:46:20,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3c91e39e/1f734918c73b43b8b729905625b401c6 [2020-11-06 22:46:20,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:20,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:20,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:20,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:20,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:20,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd797a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20, skipping insertion in model container [2020-11-06 22:46:20,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:20,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:20,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:20,792 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:20,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:20,829 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:20,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20 WrapperNode [2020-11-06 22:46:20,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:20,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:20,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:20,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:20,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (1/1) ... [2020-11-06 22:46:20,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:20,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:20,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:20,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:20,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (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 22:46:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:46:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:46:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:46:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:46:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:20,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:21,516 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:21,517 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:46:21,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:21 BoogieIcfgContainer [2020-11-06 22:46:21,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:21,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:21,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:21,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:21,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:20" (1/3) ... [2020-11-06 22:46:21,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a074ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:21, skipping insertion in model container [2020-11-06 22:46:21,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:20" (2/3) ... [2020-11-06 22:46:21,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a074ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:21, skipping insertion in model container [2020-11-06 22:46:21,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:21" (3/3) ... [2020-11-06 22:46:21,530 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2020-11-06 22:46:21,548 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:21,552 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:21,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:21,623 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:21,623 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:21,623 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:21,623 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:21,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:21,624 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:21,624 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:21,624 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-06 22:46:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:21,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:21,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:21,649 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:21,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:21,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1037759019, now seen corresponding path program 1 times [2020-11-06 22:46:21,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:21,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983693053] [2020-11-06 22:46:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:21,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:22,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983693053] [2020-11-06 22:46:22,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:22,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:46:22,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976599237] [2020-11-06 22:46:22,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:46:22,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:22,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:46:22,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:46:22,055 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-11-06 22:46:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:22,155 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2020-11-06 22:46:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:46:22,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-06 22:46:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:22,175 INFO L225 Difference]: With dead ends: 45 [2020-11-06 22:46:22,175 INFO L226 Difference]: Without dead ends: 17 [2020-11-06 22:46:22,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:46:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-06 22:46:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-06 22:46:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-06 22:46:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-06 22:46:22,246 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-11-06 22:46:22,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:22,247 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-06 22:46:22,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:46:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-06 22:46:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:22,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:22,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:22,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:22,249 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:22,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1005561992, now seen corresponding path program 1 times [2020-11-06 22:46:22,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:22,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50055995] [2020-11-06 22:46:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:22,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50055995] [2020-11-06 22:46:22,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:22,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:46:22,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317099631] [2020-11-06 22:46:22,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:46:22,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:22,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:46:22,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:46:22,447 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 4 states. [2020-11-06 22:46:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:22,538 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-11-06 22:46:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:46:22,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-06 22:46:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:22,540 INFO L225 Difference]: With dead ends: 25 [2020-11-06 22:46:22,540 INFO L226 Difference]: Without dead ends: 18 [2020-11-06 22:46:22,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:46:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-06 22:46:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-06 22:46:22,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-06 22:46:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-06 22:46:22,549 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2020-11-06 22:46:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:22,550 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-06 22:46:22,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:46:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-06 22:46:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-06 22:46:22,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:22,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:22,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:46:22,551 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:22,552 INFO L82 PathProgramCache]: Analyzing trace with hash -82641078, now seen corresponding path program 1 times [2020-11-06 22:46:22,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:22,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820607357] [2020-11-06 22:46:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:22,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:22,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820607357] [2020-11-06 22:46:22,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:22,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:46:22,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549788025] [2020-11-06 22:46:22,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:46:22,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:22,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:46:22,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:46:22,622 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-11-06 22:46:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:22,707 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-11-06 22:46:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:46:22,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-06 22:46:22,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:22,709 INFO L225 Difference]: With dead ends: 30 [2020-11-06 22:46:22,710 INFO L226 Difference]: Without dead ends: 19 [2020-11-06 22:46:22,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:46:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-06 22:46:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-06 22:46:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-06 22:46:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-06 22:46:22,719 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 17 [2020-11-06 22:46:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:22,720 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-06 22:46:22,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:46:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-06 22:46:22,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:46:22,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:22,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:22,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:46:22,722 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:22,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1953935489, now seen corresponding path program 1 times [2020-11-06 22:46:22,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:22,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240145925] [2020-11-06 22:46:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:46:22,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240145925] [2020-11-06 22:46:22,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430838231] [2020-11-06 22:46:22,820 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 22:46:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:22,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-06 22:46:22,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:46:22,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:22,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-11-06 22:46:22,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895381202] [2020-11-06 22:46:22,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:46:22,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:22,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:46:22,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:22,965 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2020-11-06 22:46:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:23,123 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-11-06 22:46:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:46:23,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-06 22:46:23,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:23,125 INFO L225 Difference]: With dead ends: 30 [2020-11-06 22:46:23,125 INFO L226 Difference]: Without dead ends: 23 [2020-11-06 22:46:23,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:46:23,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-06 22:46:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-06 22:46:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-06 22:46:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-06 22:46:23,134 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-11-06 22:46:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:23,135 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-06 22:46:23,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:46:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-06 22:46:23,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:46:23,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:23,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:23,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:23,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:23,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:23,352 INFO L82 PathProgramCache]: Analyzing trace with hash -282874925, now seen corresponding path program 2 times [2020-11-06 22:46:23,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:23,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609142153] [2020-11-06 22:46:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:23,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609142153] [2020-11-06 22:46:23,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449549027] [2020-11-06 22:46:23,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:23,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:46:23,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:46:23,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-06 22:46:23,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-06 22:46:23,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:46:23,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-11-06 22:46:23,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931228764] [2020-11-06 22:46:23,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:46:23,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:23,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:46:23,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:46:23,603 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-11-06 22:46:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:23,639 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-11-06 22:46:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:46:23,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-06 22:46:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:23,640 INFO L225 Difference]: With dead ends: 32 [2020-11-06 22:46:23,640 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:46:23,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:46:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:46:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:46:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:46:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:46:23,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-06 22:46:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:23,643 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:46:23,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:46:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:46:23,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:46:23,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:23,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:46:24,130 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:46:24,131 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:46:24,131 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:46:24,131 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:46:24,131 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:46:24,132 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:24,132 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-06 22:46:24,132 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:24,132 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:24,132 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:46:24,132 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:46:24,133 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:24,133 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-06 22:46:24,133 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:24,133 INFO L266 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:24,133 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:24,133 INFO L262 CegarLoopResult]: At program point L35-2(lines 35 37) the Hoare annotation is: (= main_~k~0 4) [2020-11-06 22:46:24,134 INFO L262 CegarLoopResult]: At program point L35-3(lines 29 38) the Hoare annotation is: (or (= main_~k~0 4) (and (= main_~i~0 0) (<= (+ main_~j~0 100) 0))) [2020-11-06 22:46:24,134 INFO L262 CegarLoopResult]: At program point L31-2(lines 31 33) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2020-11-06 22:46:24,134 INFO L266 CegarLoopResult]: For program point L31-3(lines 31 33) no Hoare annotation was computed. [2020-11-06 22:46:24,134 INFO L262 CegarLoopResult]: At program point L29-2(lines 29 38) the Hoare annotation is: (= main_~k~0 4) [2020-11-06 22:46:24,134 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 24 41) no Hoare annotation was computed. [2020-11-06 22:46:24,134 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 24 41) no Hoare annotation was computed. [2020-11-06 22:46:24,134 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 41) the Hoare annotation is: true [2020-11-06 22:46:24,135 INFO L266 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-11-06 22:46:24,135 INFO L266 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:24,135 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-06 22:46:24,135 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:24,135 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-11-06 22:46:24,135 INFO L266 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-06 22:46:24,135 INFO L266 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-06 22:46:24,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:24 BoogieIcfgContainer [2020-11-06 22:46:24,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:46:24,156 INFO L168 Benchmark]: Toolchain (without parser) took 3635.12 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 74.2 MB in the end (delta: 52.5 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:24,157 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:46:24,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.62 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:24,159 INFO L168 Benchmark]: Boogie Preprocessor took 46.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:24,160 INFO L168 Benchmark]: RCFGBuilder took 641.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 100.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:24,161 INFO L168 Benchmark]: TraceAbstraction took 2632.26 ms. Allocated memory is still 151.0 MB. Free memory was 100.4 MB in the beginning and 74.2 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:24,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.62 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 641.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 100.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2632.26 ms. Allocated memory is still 151.0 MB. Free memory was 100.4 MB in the beginning and 74.2 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: k == 4 || (i == 0 && j + 100 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 63 SDslu, 67 SDs, 0 SdLazy, 62 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 25 PreInvPairs, 34 NumberOfFragments, 60 HoareAnnotationTreeSize, 25 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 205 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5024 SizeOfPredicates, 3 NumberOfNonLiveVariables, 185 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 17/21 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 correct! Received shutdown request...