/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:45:35,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:45:35,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:45:35,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 17:45:35,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:45:35,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:45:35,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:45:35,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:45:35,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:45:35,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:45:35,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:45:35,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:45:35,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:45:35,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:45:35,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:45:35,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:45:35,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:45:35,759 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 [2021-02-19 17:45:35,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:45:35,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:45:35,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:45:35,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:45:35,811 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:45:35,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:45:35,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:45:35,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:45:35,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:45:35,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:45:35,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:45:35,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:45:35,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:45:35,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:45:35,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:45:35,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:45:35,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:45:35,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:45:35,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:45:35,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:45:35,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:45:35,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:45:35,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:45:35,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:45:35,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:45:35,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:45:35,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:45:35,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:45:35,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:45:36,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:45:36,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:45:36,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:45:36,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:45:36,251 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:45:36,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2021-02-19 17:45:36,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1836f3d09/6076526a1bf045e8a66571f7d2ace478/FLAG2c5491c49 [2021-02-19 17:45:36,883 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:45:36,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2021-02-19 17:45:36,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1836f3d09/6076526a1bf045e8a66571f7d2ace478/FLAG2c5491c49 [2021-02-19 17:45:37,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1836f3d09/6076526a1bf045e8a66571f7d2ace478 [2021-02-19 17:45:37,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:45:37,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:45:37,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:45:37,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:45:37,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:45:37,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0ed69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37, skipping insertion in model container [2021-02-19 17:45:37,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:45:37,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:45:37,448 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i[300,313] [2021-02-19 17:45:37,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:45:37,477 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:45:37,489 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i[300,313] [2021-02-19 17:45:37,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:45:37,505 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:45:37,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37 WrapperNode [2021-02-19 17:45:37,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:45:37,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:45:37,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:45:37,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:45:37,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (1/1) ... [2021-02-19 17:45:37,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:45:37,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:45:37,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:45:37,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:45:37,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (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 [2021-02-19 17:45:37,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:45:37,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:45:37,633 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:45:37,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-19 17:45:37,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:45:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:45:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:45:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:45:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:45:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-19 17:45:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:45:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:45:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:45:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:45:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:45:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:45:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:45:37,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:45:37,843 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-19 17:45:37,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:45:37 BoogieIcfgContainer [2021-02-19 17:45:37,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:45:37,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:45:37,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:45:37,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:45:37,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:45:37" (1/3) ... [2021-02-19 17:45:37,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761a3547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:45:37, skipping insertion in model container [2021-02-19 17:45:37,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:45:37" (2/3) ... [2021-02-19 17:45:37,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761a3547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:45:37, skipping insertion in model container [2021-02-19 17:45:37,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:45:37" (3/3) ... [2021-02-19 17:45:37,853 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2021-02-19 17:45:37,860 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:45:37,865 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:45:37,893 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:45:37,920 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:45:37,920 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:45:37,920 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:45:37,920 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:45:37,921 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:45:37,921 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:45:37,921 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:45:37,921 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:45:37,935 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-02-19 17:45:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-19 17:45:37,941 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:45:37,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:45:37,942 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:45:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:45:37,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1970827186, now seen corresponding path program 1 times [2021-02-19 17:45:37,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:45:37,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231323160] [2021-02-19 17:45:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:45:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:45:38,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:45:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:45:38,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:45:38,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231323160] [2021-02-19 17:45:38,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:45:38,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:45:38,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123850607] [2021-02-19 17:45:38,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:45:38,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:45:38,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:45:38,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:45:38,288 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2021-02-19 17:45:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:45:38,508 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2021-02-19 17:45:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 17:45:38,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-02-19 17:45:38,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:45:38,520 INFO L225 Difference]: With dead ends: 31 [2021-02-19 17:45:38,520 INFO L226 Difference]: Without dead ends: 14 [2021-02-19 17:45:38,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:45:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-02-19 17:45:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-02-19 17:45:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-02-19 17:45:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-02-19 17:45:38,582 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2021-02-19 17:45:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:45:38,583 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-02-19 17:45:38,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:45:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-02-19 17:45:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-19 17:45:38,584 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:45:38,584 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:45:38,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:45:38,585 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:45:38,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:45:38,586 INFO L82 PathProgramCache]: Analyzing trace with hash 113318641, now seen corresponding path program 1 times [2021-02-19 17:45:38,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:45:38,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445797517] [2021-02-19 17:45:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:45:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:45:38,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:45:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:45:38,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:45:38,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445797517] [2021-02-19 17:45:38,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580131332] [2021-02-19 17:45:38,757 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 [2021-02-19 17:45:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:45:38,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-02-19 17:45:38,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 17:45:38,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:45:38,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 17:45:38,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:45:38,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:45:38,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 17:45:38,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:45:38,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:45:38,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:45:38,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 17:45:38,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:45:38,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-19 17:45:38,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-19 17:45:38,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:45:38,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-19 17:45:38,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:45:38,958 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-19 17:45:38,960 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-19 17:45:38,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:45:38,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:45:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:45:38,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 17:45:38,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-02-19 17:45:38,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735300768] [2021-02-19 17:45:38,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 17:45:38,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:45:38,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 17:45:38,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-19 17:45:38,973 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2021-02-19 17:45:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:45:39,109 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-02-19 17:45:39,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:45:39,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-02-19 17:45:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:45:39,111 INFO L225 Difference]: With dead ends: 19 [2021-02-19 17:45:39,111 INFO L226 Difference]: Without dead ends: 16 [2021-02-19 17:45:39,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-19 17:45:39,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-02-19 17:45:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-02-19 17:45:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-19 17:45:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-02-19 17:45:39,137 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-02-19 17:45:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:45:39,138 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-02-19 17:45:39,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 17:45:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-02-19 17:45:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-19 17:45:39,139 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:45:39,139 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:45:39,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-19 17:45:39,354 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:45:39,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:45:39,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1522698452, now seen corresponding path program 2 times [2021-02-19 17:45:39,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:45:39,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951083632] [2021-02-19 17:45:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:45:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:45:39,377 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:45:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:45:39,393 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:45:39,413 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:45:39,414 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:45:39,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:45:39,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:45:39 BoogieIcfgContainer [2021-02-19 17:45:39,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:45:39,443 INFO L168 Benchmark]: Toolchain (without parser) took 2164.11 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.2 MB in the beginning and 161.2 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:45:39,443 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:45:39,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.56 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 118.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:45:39,445 INFO L168 Benchmark]: Boogie Preprocessor took 29.23 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 116.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:45:39,445 INFO L168 Benchmark]: RCFGBuilder took 307.72 ms. Allocated memory is still 153.1 MB. Free memory was 116.5 MB in the beginning and 104.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:45:39,446 INFO L168 Benchmark]: TraceAbstraction took 1595.16 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 104.1 MB in the beginning and 161.2 MB in the end (delta: -57.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:45:39,449 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 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 215.56 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 118.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.23 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 116.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 307.72 ms. Allocated memory is still 153.1 MB. Free memory was 116.5 MB in the beginning and 104.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1595.16 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 104.1 MB in the beginning and 161.2 MB in the end (delta: -57.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int i=0; VAL [i=0] [L15] COND TRUE i<5 [L16] i++ VAL [i=1] [L18] (i!=3) ? (0) : __blast_assert () VAL [i=1] [L15] COND TRUE i<5 [L16] i++ VAL [i=2] [L18] (i!=3) ? (0) : __blast_assert () VAL [i=2] [L15] COND TRUE i<5 [L16] i++ VAL [i=3] [L18] (i!=3) ? (0) : __blast_assert () VAL [i=3] [L18] CALL __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 19 SDslu, 34 SDs, 0 SdLazy, 42 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...