/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-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:20:39,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:20:39,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:20:39,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:20:39,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:20:39,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:20:39,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:20:39,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:20:39,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:20:39,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:20:39,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:20:39,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:20:39,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:20:39,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:20:39,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:20:39,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:20:39,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:20:39,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:20:39,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:20:39,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:20:39,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:20:39,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:20:39,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:20:39,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:20:39,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:20:39,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:20:39,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:20:39,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:20:39,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:20:39,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:20:39,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:20:39,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:20:39,341 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:20:39,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:20:39,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:20:39,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:20:39,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:20:39,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:20:39,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:20:39,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:20:39,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:20:39,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:20:39,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:20:39,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:20:39,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:20:39,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:20:39,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:20:39,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:20:39,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:20:39,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:20:39,344 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:20:39,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:20:39,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:20:39,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:20:39,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:20:39,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:20:39,652 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:20:39,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-02 18:20:39,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4030a7ba2/0453362862a54b11a7cc8c5c2f4307d7/FLAG12a9b67e1 [2021-05-02 18:20:40,071 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:20:40,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-02 18:20:40,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4030a7ba2/0453362862a54b11a7cc8c5c2f4307d7/FLAG12a9b67e1 [2021-05-02 18:20:40,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4030a7ba2/0453362862a54b11a7cc8c5c2f4307d7 [2021-05-02 18:20:40,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:20:40,090 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:20:40,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:20:40,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:20:40,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:20:40,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6140e162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40, skipping insertion in model container [2021-05-02 18:20:40,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:20:40,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:20:40,226 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-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-02 18:20:40,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:20:40,240 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:20:40,256 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-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-02 18:20:40,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:20:40,283 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:20:40,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40 WrapperNode [2021-05-02 18:20:40,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:20:40,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:20:40,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:20:40,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:20:40,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:20:40,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:20:40,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:20:40,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:20:40,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (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 18:20:40,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:20:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:20:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:20:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:20:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:20:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:20:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:20:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:20:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:20:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:20:40,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:20:40,625 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-02 18:20:40,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:20:40 BoogieIcfgContainer [2021-05-02 18:20:40,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:20:40,627 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:20:40,627 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:20:40,627 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:20:40,629 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:20:40" (1/1) ... [2021-05-02 18:20:40,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:20:40 BasicIcfg [2021-05-02 18:20:40,651 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:20:40,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:20:40,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:20:40,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:20:40,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:20:40" (1/4) ... [2021-05-02 18:20:40,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae14011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:20:40, skipping insertion in model container [2021-05-02 18:20:40,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:20:40" (2/4) ... [2021-05-02 18:20:40,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae14011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:20:40, skipping insertion in model container [2021-05-02 18:20:40,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:20:40" (3/4) ... [2021-05-02 18:20:40,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae14011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:20:40, skipping insertion in model container [2021-05-02 18:20:40,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:20:40" (4/4) ... [2021-05-02 18:20:40,655 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.cJordan [2021-05-02 18:20:40,661 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:20:40,665 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:20:40,677 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:20:40,698 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:20:40,698 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:20:40,698 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:20:40,698 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:20:40,698 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:20:40,698 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:20:40,698 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:20:40,698 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:20:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:20:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:20:40,721 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:40,721 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:40,722 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1405451419, now seen corresponding path program 1 times [2021-05-02 18:20:40,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:40,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479779503] [2021-05-02 18:20:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:40,990 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 18:20:40,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:40,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479779503] [2021-05-02 18:20:40,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479779503] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:20:40,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:20:40,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:20:40,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419658563] [2021-05-02 18:20:40,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:20:40,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:41,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:20:41,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:20:41,004 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:41,187 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-05-02 18:20:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:20:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 18:20:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:41,193 INFO L225 Difference]: With dead ends: 27 [2021-05-02 18:20:41,193 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:20:41,194 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:20:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:20:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 18:20:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 18:20:41,214 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-02 18:20:41,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:41,214 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 18:20:41,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 18:20:41,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:20:41,215 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:41,215 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:41,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:20:41,215 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:41,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2020096506, now seen corresponding path program 1 times [2021-05-02 18:20:41,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:41,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210075140] [2021-05-02 18:20:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:41,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:41,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:41,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210075140] [2021-05-02 18:20:41,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210075140] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:41,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162595787] [2021-05-02 18:20:41,327 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 [2021-05-02 18:20:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:41,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:20:41,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:20:41,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:41,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:41,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:41,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:41,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:41,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:20:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:20:41,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162595787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:20:41,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:20:41,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 18:20:41,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187170286] [2021-05-02 18:20:41,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:20:41,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:20:41,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:20:41,530 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 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 18:20:41,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:41,631 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-02 18:20:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:20:41,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 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 15 [2021-05-02 18:20:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:41,633 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:20:41,633 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 18:20:41,635 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:20:41,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 18:20:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 18:20:41,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 18:20:41,641 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-02 18:20:41,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:41,642 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 18:20:41,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 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 18:20:41,642 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 18:20:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:20:41,647 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:20:41,648 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:20:41,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 18:20:41,857 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:20:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:20:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash 11461735, now seen corresponding path program 2 times [2021-05-02 18:20:41,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:20:41,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509741828] [2021-05-02 18:20:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:20:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:20:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:20:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:20:41,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:20:41,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509741828] [2021-05-02 18:20:41,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509741828] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:20:41,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:20:41,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 18:20:41,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238661644] [2021-05-02 18:20:41,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 18:20:41,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:20:41,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 18:20:41,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:20:41,977 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:42,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:20:42,009 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-05-02 18:20:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:20:42,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 18:20:42,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:20:42,010 INFO L225 Difference]: With dead ends: 16 [2021-05-02 18:20:42,010 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:20:42,010 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:20:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:20:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:20:42,010 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 18:20:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:20:42,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-02 18:20:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:20:42,011 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:20:42,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:20:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:20:42,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:20:42,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 18:20:42,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:20:42 BasicIcfg [2021-05-02 18:20:42,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:20:42,015 INFO L168 Benchmark]: Toolchain (without parser) took 1925.13 ms. Allocated memory is still 190.8 MB. Free memory was 156.3 MB in the beginning and 117.7 MB in the end (delta: 38.7 MB). Peak memory consumption was 38.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:42,016 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 190.8 MB. Free memory is still 172.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:20:42,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.68 ms. Allocated memory is still 190.8 MB. Free memory was 156.1 MB in the beginning and 174.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:42,020 INFO L168 Benchmark]: Boogie Preprocessor took 50.67 ms. Allocated memory is still 190.8 MB. Free memory was 174.9 MB in the beginning and 173.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:42,022 INFO L168 Benchmark]: RCFGBuilder took 290.43 ms. Allocated memory is still 190.8 MB. Free memory was 173.1 MB in the beginning and 159.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:42,023 INFO L168 Benchmark]: IcfgTransformer took 23.92 ms. Allocated memory is still 190.8 MB. Free memory was 159.0 MB in the beginning and 157.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:42,023 INFO L168 Benchmark]: TraceAbstraction took 1363.02 ms. Allocated memory is still 190.8 MB. Free memory was 157.4 MB in the beginning and 117.7 MB in the end (delta: 39.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. [2021-05-02 18:20:42,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 190.8 MB. Free memory is still 172.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 192.68 ms. Allocated memory is still 190.8 MB. Free memory was 156.1 MB in the beginning and 174.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.67 ms. Allocated memory is still 190.8 MB. Free memory was 174.9 MB in the beginning and 173.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 290.43 ms. Allocated memory is still 190.8 MB. Free memory was 173.1 MB in the beginning and 159.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 23.92 ms. Allocated memory is still 190.8 MB. Free memory was 159.0 MB in the beginning and 157.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1363.02 ms. Allocated memory is still 190.8 MB. Free memory was 157.4 MB in the beginning and 117.7 MB in the end (delta: 39.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: 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 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1315.6ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 20.0ms, AutomataDifference: 336.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 24 SDslu, 88 SDs, 0 SdLazy, 112 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 134.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 310.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.5ms SsaConstructionTime, 98.5ms SatisfiabilityAnalysisTime, 478.1ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 3 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 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...