/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:06:41,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:06:41,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:06:41,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 18:06:41,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:06:41,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:06:41,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:06:41,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:06:41,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:06:41,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:06:41,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:06:41,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:06:41,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:06:41,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:06:41,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:06:41,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:06:41,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:06:41,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:06:41,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:06:41,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:06:41,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:06:41,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:06:41,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:06:41,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:06:41,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:06:41,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:06:41,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:06:41,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:06:41,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:06:41,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:06:41,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:06:41,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:06:41,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:06:41,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:06:41,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:06:41,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:06:41,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:06:41,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:06:41,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:06:41,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:06:41,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:06:41,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:06:41,452 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:06:41,452 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:06:41,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:06:41,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:06:41,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:06:41,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:06:41,787 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:06:41,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2021-05-02 18:06:41,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94695db45/07d64441ac2f4d1b8266a81b5a00bad8/FLAGe125cdefc [2021-05-02 18:06:42,232 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:06:42,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2021-05-02 18:06:42,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94695db45/07d64441ac2f4d1b8266a81b5a00bad8/FLAGe125cdefc [2021-05-02 18:06:42,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94695db45/07d64441ac2f4d1b8266a81b5a00bad8 [2021-05-02 18:06:42,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:06:42,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:06:42,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:06:42,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:06:42,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:06:42,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201b13ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42, skipping insertion in model container [2021-05-02 18:06:42,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:06:42,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:06:42,403 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c[584,597] [2021-05-02 18:06:42,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:06:42,419 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:06:42,428 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c[584,597] [2021-05-02 18:06:42,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:06:42,440 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:06:42,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42 WrapperNode [2021-05-02 18:06:42,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:06:42,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:06:42,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:06:42,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:06:42,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:06:42,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:06:42,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:06:42,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:06:42,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (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 [2021-05-02 18:06:42,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:06:42,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:06:42,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:06:42,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:06:42,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:06:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:06:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:06:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:06:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:06:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:06:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:06:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:06:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:06:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:06:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:06:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:06:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:06:42,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:06:42,773 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:06:42,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:06:42 BoogieIcfgContainer [2021-05-02 18:06:42,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:06:42,774 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:06:42,774 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:06:42,775 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:06:42,777 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:06:42" (1/1) ... [2021-05-02 18:06:42,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:06:42 BasicIcfg [2021-05-02 18:06:42,786 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:06:42,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:06:42,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:06:42,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:06:42,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:06:42" (1/4) ... [2021-05-02 18:06:42,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6430c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:06:42, skipping insertion in model container [2021-05-02 18:06:42,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:42" (2/4) ... [2021-05-02 18:06:42,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6430c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:06:42, skipping insertion in model container [2021-05-02 18:06:42,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:06:42" (3/4) ... [2021-05-02 18:06:42,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6430c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:06:42, skipping insertion in model container [2021-05-02 18:06:42,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:06:42" (4/4) ... [2021-05-02 18:06:42,792 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.cJordan [2021-05-02 18:06:42,795 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:06:42,797 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:06:42,807 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:06:42,837 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:06:42,837 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:06:42,838 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:06:42,838 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:06:42,838 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:06:42,838 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:06:42,838 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:06:42,838 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:06:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:06:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:06:42,859 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:06:42,859 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:06:42,859 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:06:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:06:42,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1688739456, now seen corresponding path program 1 times [2021-05-02 18:06:42,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:06:42,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001532357] [2021-05-02 18:06:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:06:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:06:43,304 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2021-05-02 18:06:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:06:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:06:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:06:43,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:06:43,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001532357] [2021-05-02 18:06:43,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001532357] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:06:43,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:06:43,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 18:06:43,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361868333] [2021-05-02 18:06:43,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:06:43,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:06:43,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:06:43,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:06:43,404 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:06:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:06:43,688 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-05-02 18:06:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:06:43,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 18:06:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:06:43,693 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:06:43,693 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:06:43,694 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 389.5ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:06:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:06:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:06:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 18:06:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:06:43,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-05-02 18:06:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:06:43,709 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:06:43,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:06:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:06:43,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:06:43,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:06:43,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:06:43 BasicIcfg [2021-05-02 18:06:43,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:06:43,713 INFO L168 Benchmark]: Toolchain (without parser) took 1456.58 ms. Allocated memory is still 198.2 MB. Free memory was 163.7 MB in the beginning and 166.0 MB in the end (delta: -2.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:06:43,713 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 198.2 MB. Free memory is still 180.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:06:43,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.14 ms. Allocated memory is still 198.2 MB. Free memory was 163.5 MB in the beginning and 154.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:43,714 INFO L168 Benchmark]: Boogie Preprocessor took 78.68 ms. Allocated memory is still 198.2 MB. Free memory was 154.3 MB in the beginning and 181.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:43,715 INFO L168 Benchmark]: RCFGBuilder took 252.43 ms. Allocated memory is still 198.2 MB. Free memory was 181.8 MB in the beginning and 168.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:43,715 INFO L168 Benchmark]: IcfgTransformer took 12.14 ms. Allocated memory is still 198.2 MB. Free memory was 168.7 MB in the beginning and 167.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:43,715 INFO L168 Benchmark]: TraceAbstraction took 925.02 ms. Allocated memory is still 198.2 MB. Free memory was 167.1 MB in the beginning and 166.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:43,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 198.2 MB. Free memory is still 180.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 181.14 ms. Allocated memory is still 198.2 MB. Free memory was 163.5 MB in the beginning and 154.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.68 ms. Allocated memory is still 198.2 MB. Free memory was 154.3 MB in the beginning and 181.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 252.43 ms. Allocated memory is still 198.2 MB. Free memory was 181.8 MB in the beginning and 168.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 12.14 ms. Allocated memory is still 198.2 MB. Free memory was 168.7 MB in the beginning and 167.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 925.02 ms. Allocated memory is still 198.2 MB. Free memory was 167.1 MB in the beginning and 166.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 874.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.5ms, AutomataDifference: 299.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 30 SDs, 0 SdLazy, 32 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 389.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.7ms SsaConstructionTime, 54.5ms SatisfiabilityAnalysisTime, 428.0ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...