/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-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:08:13,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:08:13,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:08:13,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:08:13,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:08:13,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:08:13,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:08:13,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:08:13,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:08:13,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:08:13,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:08:13,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:08:13,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:08:13,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:08:13,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:08:13,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:08:13,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:08:13,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:08:13,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:08:13,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:08:13,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:08:13,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:08:13,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:08:13,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:08:13,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:08:13,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:08:13,880 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:08:13,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:08:13,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:08:13,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:08:13,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:08:13,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:08:13,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:08:13,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:08:13,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:08:13,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:08:13,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:08:13,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:08:13,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:08:13,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:08:13,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:08:13,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:08:13,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:08:13,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:08:13,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:08:13,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:08:13,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:08:13,886 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:08:13,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:08:14,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:08:14,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:08:14,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:08:14,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:08:14,263 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:08:14,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2021-05-02 18:08:14,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f85742058/46c4f6fec19b4790bb8c638689606b2b/FLAGf01d760e9 [2021-05-02 18:08:14,745 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:08:14,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2021-05-02 18:08:14,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f85742058/46c4f6fec19b4790bb8c638689606b2b/FLAGf01d760e9 [2021-05-02 18:08:15,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f85742058/46c4f6fec19b4790bb8c638689606b2b [2021-05-02 18:08:15,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:08:15,172 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:08:15,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:08:15,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:08:15,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:08:15,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230af910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15, skipping insertion in model container [2021-05-02 18:08:15,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:08:15,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:08:15,313 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-invgen/id_build.i[893,906] [2021-05-02 18:08:15,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:08:15,339 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:08:15,351 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-invgen/id_build.i[893,906] [2021-05-02 18:08:15,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:08:15,372 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:08:15,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15 WrapperNode [2021-05-02 18:08:15,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:08:15,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:08:15,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:08:15,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:08:15,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:08:15,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:08:15,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:08:15,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:08:15,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (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 18:08:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:08:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:08:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:08:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:08:15,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:08:15,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:08:15,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:08:15,525 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:08:15,525 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:08:15,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:08:15,526 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:08:15,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:08:15,526 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:08:15,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:08:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:08:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:08:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:08:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:08:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:08:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:08:15,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:08:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:08:15,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:08:15,794 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 18:08:15,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:08:15 BoogieIcfgContainer [2021-05-02 18:08:15,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:08:15,796 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:08:15,796 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:08:15,797 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:08:15,799 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:08:15" (1/1) ... [2021-05-02 18:08:15,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:08:15 BasicIcfg [2021-05-02 18:08:15,829 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:08:15,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:08:15,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:08:15,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:08:15,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:08:15" (1/4) ... [2021-05-02 18:08:15,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bd2f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:08:15, skipping insertion in model container [2021-05-02 18:08:15,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:08:15" (2/4) ... [2021-05-02 18:08:15,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bd2f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:08:15, skipping insertion in model container [2021-05-02 18:08:15,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:08:15" (3/4) ... [2021-05-02 18:08:15,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bd2f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:08:15, skipping insertion in model container [2021-05-02 18:08:15,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:08:15" (4/4) ... [2021-05-02 18:08:15,836 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.iJordan [2021-05-02 18:08:15,842 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:08:15,847 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:08:15,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:08:15,876 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:08:15,876 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:08:15,876 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:08:15,876 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:08:15,876 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:08:15,876 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:08:15,876 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:08:15,876 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:08:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 18:08:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:08:15,894 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:08:15,894 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:08:15,895 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:08:15,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:08:15,899 INFO L82 PathProgramCache]: Analyzing trace with hash -870026719, now seen corresponding path program 1 times [2021-05-02 18:08:15,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:08:15,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704996194] [2021-05-02 18:08:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:08:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:16,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:08:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:16,097 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 18:08:16,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:08:16,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704996194] [2021-05-02 18:08:16,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704996194] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:08:16,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:08:16,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:08:16,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029910448] [2021-05-02 18:08:16,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:08:16,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:08:16,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:08:16,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:08:16,116 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 18:08:16,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:08:16,289 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-05-02 18:08:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:08:16,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2021-05-02 18:08:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:08:16,297 INFO L225 Difference]: With dead ends: 27 [2021-05-02 18:08:16,297 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 18:08:16,299 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:08:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 18:08:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 18:08:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:08:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-05-02 18:08:16,327 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2021-05-02 18:08:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:08:16,327 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-05-02 18:08:16,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 18:08:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-05-02 18:08:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:08:16,328 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:08:16,329 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:08:16,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:08:16,329 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:08:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:08:16,330 INFO L82 PathProgramCache]: Analyzing trace with hash 685068608, now seen corresponding path program 1 times [2021-05-02 18:08:16,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:08:16,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597832585] [2021-05-02 18:08:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:08:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:08:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-05-02 18:08:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:08:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:08:16,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:08:16,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597832585] [2021-05-02 18:08:16,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597832585] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:08:16,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:08:16,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:08:16,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600622529] [2021-05-02 18:08:16,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:08:16,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:08:16,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:08:16,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:08:16,466 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:08:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:08:16,626 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 18:08:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:08:16,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-05-02 18:08:16,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:08:16,627 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:08:16,627 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:08:16,629 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 140.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:08:16,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:08:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:08:16,630 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 18:08:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:08:16,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-02 18:08:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:08:16,632 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:08:16,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:08:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:08:16,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:08:16,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:08:16,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:08:16 BasicIcfg [2021-05-02 18:08:16,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:08:16,642 INFO L168 Benchmark]: Toolchain (without parser) took 1469.12 ms. Allocated memory is still 196.1 MB. Free memory was 161.3 MB in the beginning and 150.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:16,643 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 196.1 MB. Free memory is still 178.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:08:16,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.24 ms. Allocated memory is still 196.1 MB. Free memory was 161.2 MB in the beginning and 151.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:16,646 INFO L168 Benchmark]: Boogie Preprocessor took 78.39 ms. Allocated memory is still 196.1 MB. Free memory was 151.7 MB in the beginning and 179.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:16,652 INFO L168 Benchmark]: RCFGBuilder took 342.07 ms. Allocated memory is still 196.1 MB. Free memory was 179.0 MB in the beginning and 164.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:16,653 INFO L168 Benchmark]: IcfgTransformer took 33.40 ms. Allocated memory is still 196.1 MB. Free memory was 164.9 MB in the beginning and 163.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:16,653 INFO L168 Benchmark]: TraceAbstraction took 809.81 ms. Allocated memory is still 196.1 MB. Free memory was 162.8 MB in the beginning and 150.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:08:16,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 196.1 MB. Free memory is still 178.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 199.24 ms. Allocated memory is still 196.1 MB. Free memory was 161.2 MB in the beginning and 151.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.39 ms. Allocated memory is still 196.1 MB. Free memory was 151.7 MB in the beginning and 179.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 342.07 ms. Allocated memory is still 196.1 MB. Free memory was 179.0 MB in the beginning and 164.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 33.40 ms. Allocated memory is still 196.1 MB. Free memory was 164.9 MB in the beginning and 163.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 809.81 ms. Allocated memory is still 196.1 MB. Free memory was 162.8 MB in the beginning and 150.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 759.0ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 11.2ms, AutomataDifference: 357.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 38 SDslu, 43 SDs, 0 SdLazy, 90 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 265.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.5ms SsaConstructionTime, 40.1ms SatisfiabilityAnalysisTime, 229.7ms InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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...