/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 20:51:24,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 20:51:24,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 20:51:24,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 20:51:24,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 20:51:24,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 20:51:24,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 20:51:24,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 20:51:24,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 20:51:24,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 20:51:24,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 20:51:24,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 20:51:24,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 20:51:24,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 20:51:24,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 20:51:24,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 20:51:24,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 20:51:24,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 20:51:24,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 20:51:24,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 20:51:24,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 20:51:24,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 20:51:24,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 20:51:24,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 20:51:24,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 20:51:24,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 20:51:24,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 20:51:24,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 20:51:24,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 20:51:24,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-02-23 20:51:24,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 20:51:24,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 20:51:24,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 20:51:24,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 20:51:24,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 20:51:24,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 20:51:24,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 20:51:24,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 20:51:24,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 20:51:24,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 20:51:24,592 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 20:51:24,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 20:51:24,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 20:51:24,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 20:51:24,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 20:51:24,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 20:51:24,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 20:51:24,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 20:51:24,593 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 20:51:24,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 20:51:24,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 20:51:24,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 20:51:24,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 20:51:24,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:51:24,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 20:51:24,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 20:51:24,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 20:51:24,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 20:51:24,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 20:51:24,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 20:51:24,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 20:51:24,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 20:51:24,596 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 20:51:24,596 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 20:51:24,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 20:51:24,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 20:51:24,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 20:51:24,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 20:51:24,815 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 20:51:24,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2022-02-23 20:51:24,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2632128ca/36903962ec93422f9c1585bda9d23abc/FLAG39960cae3 [2022-02-23 20:51:25,260 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 20:51:25,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2022-02-23 20:51:25,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2632128ca/36903962ec93422f9c1585bda9d23abc/FLAG39960cae3 [2022-02-23 20:51:25,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2632128ca/36903962ec93422f9c1585bda9d23abc [2022-02-23 20:51:25,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 20:51:25,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 20:51:25,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 20:51:25,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 20:51:25,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 20:51:25,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1969cdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25, skipping insertion in model container [2022-02-23 20:51:25,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 20:51:25,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 20:51:25,502 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i[895,908] [2022-02-23 20:51:25,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:51:25,538 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 20:51:25,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i[895,908] [2022-02-23 20:51:25,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:51:25,561 INFO L208 MainTranslator]: Completed translation [2022-02-23 20:51:25,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25 WrapperNode [2022-02-23 20:51:25,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 20:51:25,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 20:51:25,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 20:51:25,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 20:51:25,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 20:51:25,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 20:51:25,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 20:51:25,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 20:51:25,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:25,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:51:25,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:51:25,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-23 20:51:25,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-23 20:51:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 20:51:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 20:51:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 20:51:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 20:51:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 20:51:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 20:51:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 20:51:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 20:51:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-23 20:51:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-23 20:51:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 20:51:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 20:51:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 20:51:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 20:51:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 20:51:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 20:51:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 20:51:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 20:51:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 20:51:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 20:51:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 20:51:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 20:51:25,709 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 20:51:25,710 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 20:51:25,779 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 20:51:25,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 20:51:25,784 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 20:51:25,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:51:25 BoogieIcfgContainer [2022-02-23 20:51:25,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 20:51:25,787 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 20:51:25,787 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 20:51:25,788 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 20:51:25,791 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:51:25" (1/1) ... [2022-02-23 20:51:26,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:51:26 BasicIcfg [2022-02-23 20:51:26,249 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 20:51:26,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 20:51:26,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 20:51:26,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 20:51:26,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 08:51:25" (1/4) ... [2022-02-23 20:51:26,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f687418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:51:26, skipping insertion in model container [2022-02-23 20:51:26,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:51:25" (2/4) ... [2022-02-23 20:51:26,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f687418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:51:26, skipping insertion in model container [2022-02-23 20:51:26,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:51:25" (3/4) ... [2022-02-23 20:51:26,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f687418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:51:26, skipping insertion in model container [2022-02-23 20:51:26,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:51:26" (4/4) ... [2022-02-23 20:51:26,260 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005.iqvasr [2022-02-23 20:51:26,265 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 20:51:26,265 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 20:51:26,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 20:51:26,324 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 20:51:26,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 20:51:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-02-23 20:51:26,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 20:51:26,341 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:26,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:26,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:26,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1257757292, now seen corresponding path program 1 times [2022-02-23 20:51:26,354 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:26,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448311747] [2022-02-23 20:51:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:51:26,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:26,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448311747] [2022-02-23 20:51:26,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448311747] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:51:26,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:51:26,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 20:51:26,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651022239] [2022-02-23 20:51:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:51:26,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 20:51:26,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:26,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 20:51:26,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 20:51:26,546 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-02-23 20:51:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:26,583 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-02-23 20:51:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 20:51:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 [2022-02-23 20:51:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:26,594 INFO L225 Difference]: With dead ends: 31 [2022-02-23 20:51:26,595 INFO L226 Difference]: Without dead ends: 12 [2022-02-23 20:51:26,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 20:51:26,602 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:26,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 20 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:51:26,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-02-23 20:51:26,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-02-23 20:51:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 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) [2022-02-23 20:51:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-02-23 20:51:26,630 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-02-23 20:51:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:26,630 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-02-23 20:51:26,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2022-02-23 20:51:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-02-23 20:51:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 20:51:26,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:26,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:26,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 20:51:26,632 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:26,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1258680813, now seen corresponding path program 1 times [2022-02-23 20:51:26,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:26,634 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519032024] [2022-02-23 20:51:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:26,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:51:26,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:26,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519032024] [2022-02-23 20:51:26,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519032024] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:51:26,729 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:51:26,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 20:51:26,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944854913] [2022-02-23 20:51:26,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:51:26,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 20:51:26,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:26,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 20:51:26,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 20:51:26,733 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2022-02-23 20:51:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:26,767 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-02-23 20:51:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 20:51:26,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 [2022-02-23 20:51:26,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:26,768 INFO L225 Difference]: With dead ends: 18 [2022-02-23 20:51:26,769 INFO L226 Difference]: Without dead ends: 13 [2022-02-23 20:51:26,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-23 20:51:26,776 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:26,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:51:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-23 20:51:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-23 20:51:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 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) [2022-02-23 20:51:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-02-23 20:51:26,783 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-02-23 20:51:26,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:26,784 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-02-23 20:51:26,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2022-02-23 20:51:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-02-23 20:51:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 20:51:26,785 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:26,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:26,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 20:51:26,786 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:26,786 INFO L85 PathProgramCache]: Analyzing trace with hash 391120150, now seen corresponding path program 1 times [2022-02-23 20:51:26,786 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:26,786 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638884219] [2022-02-23 20:51:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:26,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:51:26,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:26,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638884219] [2022-02-23 20:51:26,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638884219] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:51:26,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416415021] [2022-02-23 20:51:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:26,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:26,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:51:26,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:51:26,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 20:51:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-23 20:51:26,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:51:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:51:27,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:51:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:51:27,357 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416415021] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:51:27,359 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:51:27,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-02-23 20:51:27,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230583309] [2022-02-23 20:51:27,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:51:27,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-23 20:51:27,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:27,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-23 20:51:27,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-23 20:51:27,365 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:51:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:27,471 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-02-23 20:51:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 20:51:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-02-23 20:51:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:27,472 INFO L225 Difference]: With dead ends: 13 [2022-02-23 20:51:27,472 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 20:51:27,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-02-23 20:51:27,475 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:27,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:51:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 20:51:27,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 20:51:27,478 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) [2022-02-23 20:51:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 20:51:27,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-02-23 20:51:27,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:27,478 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 20:51:27,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-23 20:51:27,480 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 20:51:27,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 20:51:27,483 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 20:51:27,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 20:51:27,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:27,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 20:51:27,747 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-23 20:51:27,747 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-23 20:51:27,747 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-23 20:51:27,747 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-23 20:51:27,747 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-23 20:51:27,747 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-23 20:51:27,772 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-23 20:51:27,773 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 24 34) the Hoare annotation is: true [2022-02-23 20:51:27,773 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 31) the Hoare annotation is: (let ((.cse0 (+ main_~j~0 (div (+ (* (- 1) main_~i~0) 1) (- 2))))) (and (<= main_~i~0 (+ main_~j~0 3)) (<= .cse0 10) (<= 10 .cse0) (= (mod (+ main_~i~0 1) 2) 0))) [2022-02-23 20:51:27,774 INFO L854 garLoopResultBuilder]: At program point L28-3(lines 28 31) the Hoare annotation is: (let ((.cse0 (+ main_~j~0 (div (+ (* (- 1) main_~i~0) 1) (- 2))))) (and (<= main_~j~0 6) (<= .cse0 10) (<= 10 .cse0) (< 5 main_~j~0) (= (mod (+ main_~i~0 1) 2) 0))) [2022-02-23 20:51:27,774 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2022-02-23 20:51:27,774 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 24 34) no Hoare annotation was computed. [2022-02-23 20:51:27,774 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 24 34) no Hoare annotation was computed. [2022-02-23 20:51:27,774 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-02-23 20:51:27,774 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-02-23 20:51:27,774 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-02-23 20:51:27,774 INFO L858 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-02-23 20:51:27,774 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-02-23 20:51:27,775 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-02-23 20:51:27,777 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-23 20:51:27,779 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 20:51:27,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:51:27 BasicIcfg [2022-02-23 20:51:27,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 20:51:27,812 INFO L158 Benchmark]: Toolchain (without parser) took 2519.13ms. Allocated memory was 190.8MB in the beginning and 268.4MB in the end (delta: 77.6MB). Free memory was 130.9MB in the beginning and 238.0MB in the end (delta: -107.1MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. [2022-02-23 20:51:27,812 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 190.8MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 20:51:27,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.12ms. Allocated memory was 190.8MB in the beginning and 268.4MB in the end (delta: 77.6MB). Free memory was 130.7MB in the beginning and 238.2MB in the end (delta: -107.6MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. [2022-02-23 20:51:27,813 INFO L158 Benchmark]: Boogie Preprocessor took 26.95ms. Allocated memory is still 268.4MB. Free memory was 238.2MB in the beginning and 237.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 20:51:27,813 INFO L158 Benchmark]: RCFGBuilder took 194.92ms. Allocated memory is still 268.4MB. Free memory was 237.2MB in the beginning and 227.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 20:51:27,814 INFO L158 Benchmark]: IcfgTransformer took 462.30ms. Allocated memory is still 268.4MB. Free memory was 227.2MB in the beginning and 216.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 20:51:27,814 INFO L158 Benchmark]: TraceAbstraction took 1560.73ms. Allocated memory is still 268.4MB. Free memory was 216.2MB in the beginning and 238.0MB in the end (delta: -21.8MB). Peak memory consumption was 74.7MB. Max. memory is 8.0GB. [2022-02-23 20:51:27,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 190.8MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 267.12ms. Allocated memory was 190.8MB in the beginning and 268.4MB in the end (delta: 77.6MB). Free memory was 130.7MB in the beginning and 238.2MB in the end (delta: -107.6MB). Peak memory consumption was 8.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.95ms. Allocated memory is still 268.4MB. Free memory was 238.2MB in the beginning and 237.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 194.92ms. Allocated memory is still 268.4MB. Free memory was 237.2MB in the beginning and 227.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 462.30ms. Allocated memory is still 268.4MB. Free memory was 227.2MB in the beginning and 216.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1560.73ms. Allocated memory is still 268.4MB. Free memory was 216.2MB in the beginning and 238.0MB in the end (delta: -21.8MB). Peak memory consumption was 74.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 35 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 82 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 2 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((i <= j + 3 && j + (-1 * i + 1) / -2 <= 10) && 10 <= j + (-1 * i + 1) / -2) && (i + 1) % 2 == 0 RESULT: Ultimate proved your program to be correct! [2022-02-23 20:51:27,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...