/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/nla-digbench-scaling/geo2-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 22:59:45,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 22:59:45,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 22:59:45,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 22:59:45,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 22:59:45,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 22:59:45,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 22:59:45,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 22:59:45,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 22:59:45,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 22:59:45,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 22:59:45,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 22:59:45,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 22:59:45,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 22:59:45,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 22:59:45,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 22:59:45,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 22:59:45,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 22:59:45,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 22:59:45,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 22:59:45,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 22:59:45,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 22:59:45,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 22:59:45,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 22:59:45,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-23 22:59:45,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-23 22:59:45,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-23 22:59:45,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-23 22:59:45,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-23 22:59:45,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-02-23 22:59:45,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 22:59:45,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 22:59:45,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 22:59:45,601 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 22:59:45,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 22:59:45,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 22:59:45,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 22:59:45,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 22:59:45,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 22:59:45,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 22:59:45,633 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 22:59:45,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 22:59:45,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 22:59:45,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 22:59:45,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 22:59:45,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 22:59:45,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 22:59:45,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 22:59:45,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 22:59:45,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 22:59:45,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 22:59:45,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 22:59:45,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 22:59:45,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:59:45,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 22:59:45,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 22:59:45,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 22:59:45,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 22:59:45,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 22:59:45,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 22:59:45,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 22:59:45,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 22:59:45,637 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 22:59:45,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 22:59:45,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 22:59:45,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 22:59:45,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 22:59:45,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 22:59:45,854 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 22:59:45,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound50.c [2022-02-23 22:59:45,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47f66c50/35e6ca42ec744186acf7b6701367f06b/FLAG59f309776 [2022-02-23 22:59:46,307 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 22:59:46,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound50.c [2022-02-23 22:59:46,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47f66c50/35e6ca42ec744186acf7b6701367f06b/FLAG59f309776 [2022-02-23 22:59:46,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47f66c50/35e6ca42ec744186acf7b6701367f06b [2022-02-23 22:59:46,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 22:59:46,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 22:59:46,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 22:59:46,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 22:59:46,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 22:59:46,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d29ef9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46, skipping insertion in model container [2022-02-23 22:59:46,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 22:59:46,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 22:59:46,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound50.c[525,538] [2022-02-23 22:59:46,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:59:46,548 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 22:59:46,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_unwindbound50.c[525,538] [2022-02-23 22:59:46,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:59:46,571 INFO L208 MainTranslator]: Completed translation [2022-02-23 22:59:46,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46 WrapperNode [2022-02-23 22:59:46,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 22:59:46,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 22:59:46,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 22:59:46,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 22:59:46,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 22:59:46,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 22:59:46,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 22:59:46,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 22:59:46,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:59:46,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:59:46,624 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 22:59:46,633 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 22:59:46,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 22:59:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 22:59:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 22:59:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 22:59:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 22:59:46,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 22:59:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 22:59:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 22:59:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 22:59:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 22:59:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 22:59:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 22:59:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 22:59:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 22:59:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 22:59:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 22:59:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 22:59:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 22:59:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 22:59:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 22:59:46,715 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 22:59:46,716 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 22:59:46,797 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 22:59:46,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 22:59:46,802 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 22:59:46,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:59:46 BoogieIcfgContainer [2022-02-23 22:59:46,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 22:59:46,805 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 22:59:46,805 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 22:59:46,806 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 22:59:46,808 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:59:46" (1/1) ... [2022-02-23 22:59:46,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:59:46 BasicIcfg [2022-02-23 22:59:46,823 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 22:59:46,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 22:59:46,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 22:59:46,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 22:59:46,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:59:46" (1/4) ... [2022-02-23 22:59:46,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83e6d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:59:46, skipping insertion in model container [2022-02-23 22:59:46,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:46" (2/4) ... [2022-02-23 22:59:46,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83e6d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:59:46, skipping insertion in model container [2022-02-23 22:59:46,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:59:46" (3/4) ... [2022-02-23 22:59:46,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83e6d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:59:46, skipping insertion in model container [2022-02-23 22:59:46,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:59:46" (4/4) ... [2022-02-23 22:59:46,830 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound50.cqvasr [2022-02-23 22:59:46,834 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 22:59:46,834 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 22:59:46,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 22:59:46,879 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 22:59:46,879 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 22:59:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 22:59:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 22:59:46,896 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:59:46,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:59:46,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:59:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:59:46,910 INFO L85 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2022-02-23 22:59:46,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:59:46,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064859800] [2022-02-23 22:59:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:46,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:59:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 22:59:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:47,062 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 22:59:47,062 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:59:47,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064859800] [2022-02-23 22:59:47,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064859800] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:59:47,064 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:59:47,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 22:59:47,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219925783] [2022-02-23 22:59:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:59:47,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 22:59:47,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:59:47,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 22:59:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:59:47,110 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 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 22:59:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:59:47,194 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-02-23 22:59:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 22:59:47,197 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 22:59:47,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:59:47,208 INFO L225 Difference]: With dead ends: 39 [2022-02-23 22:59:47,208 INFO L226 Difference]: Without dead ends: 18 [2022-02-23 22:59:47,212 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 22:59:47,219 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 22:59:47,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 22:59:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-02-23 22:59:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-02-23 22:59:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 22:59:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-02-23 22:59:47,258 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-02-23 22:59:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:59:47,259 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-02-23 22:59:47,259 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 22:59:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-02-23 22:59:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 22:59:47,260 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:59:47,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:59:47,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 22:59:47,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:59:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:59:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2022-02-23 22:59:47,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:59:47,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177340250] [2022-02-23 22:59:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:47,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:59:47,290 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:59:47,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119820406] [2022-02-23 22:59:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:47,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:59:47,299 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 22:59:47,328 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 22:59:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:47,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 22:59:47,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:59:47,455 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 22:59:47,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:59:47,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:59:47,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177340250] [2022-02-23 22:59:47,456 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:59:47,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119820406] [2022-02-23 22:59:47,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119820406] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:59:47,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:59:47,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-23 22:59:47,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000332073] [2022-02-23 22:59:47,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:59:47,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-23 22:59:47,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:59:47,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-23 22:59:47,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 22:59:47,466 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 22:59:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:59:47,492 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-02-23 22:59:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-23 22:59:47,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) Word has length 12 [2022-02-23 22:59:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:59:47,494 INFO L225 Difference]: With dead ends: 26 [2022-02-23 22:59:47,495 INFO L226 Difference]: Without dead ends: 19 [2022-02-23 22:59:47,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-23 22:59:47,496 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:59:47,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:59:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-02-23 22:59:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-02-23 22:59:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 22:59:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-02-23 22:59:47,505 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-02-23 22:59:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:59:47,506 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-02-23 22:59:47,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 22:59:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-02-23 22:59:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-23 22:59:47,506 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:59:47,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:59:47,532 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 22:59:47,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:47,722 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:59:47,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:59:47,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2022-02-23 22:59:47,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:59:47,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145535039] [2022-02-23 22:59:47,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:47,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:59:47,735 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:59:47,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020614035] [2022-02-23 22:59:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:47,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:47,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:59:47,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:59:47,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 22:59:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:47,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-23 22:59:47,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:59:47,890 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 22:59:47,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:59:47,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:59:47,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145535039] [2022-02-23 22:59:47,891 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:59:47,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020614035] [2022-02-23 22:59:47,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020614035] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:59:47,892 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:59:47,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 22:59:47,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612961484] [2022-02-23 22:59:47,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:59:47,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 22:59:47,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:59:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 22:59:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 22:59:47,894 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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) [2022-02-23 22:59:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:59:47,919 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-02-23 22:59:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 22:59:47,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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 12 [2022-02-23 22:59:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:59:47,920 INFO L225 Difference]: With dead ends: 28 [2022-02-23 22:59:47,920 INFO L226 Difference]: Without dead ends: 25 [2022-02-23 22:59:47,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-23 22:59:47,921 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:59:47,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 61 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:59:47,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-23 22:59:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-02-23 22:59:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 22:59:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-02-23 22:59:47,927 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-02-23 22:59:47,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:59:47,928 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-02-23 22:59:47,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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) [2022-02-23 22:59:47,928 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-02-23 22:59:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-23 22:59:47,928 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:59:47,929 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:59:47,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 22:59:48,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-23 22:59:48,145 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:59:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:59:48,145 INFO L85 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2022-02-23 22:59:48,146 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:59:48,146 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819432403] [2022-02-23 22:59:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:48,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:59:48,170 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:59:48,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302190428] [2022-02-23 22:59:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:48,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:48,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:59:48,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:59:48,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 22:59:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:48,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-23 22:59:48,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:59:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 22:59:48,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:59:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 22:59:48,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:59:48,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819432403] [2022-02-23 22:59:48,436 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:59:48,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302190428] [2022-02-23 22:59:48,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302190428] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 22:59:48,437 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 22:59:48,437 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-02-23 22:59:48,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33747248] [2022-02-23 22:59:48,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 22:59:48,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-23 22:59:48,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:59:48,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-23 22:59:48,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-23 22:59:48,440 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-02-23 22:59:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:59:48,519 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2022-02-23 22:59:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-23 22:59:48,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-02-23 22:59:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:59:48,523 INFO L225 Difference]: With dead ends: 56 [2022-02-23 22:59:48,524 INFO L226 Difference]: Without dead ends: 49 [2022-02-23 22:59:48,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-02-23 22:59:48,529 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:59:48,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 72 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:59:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-02-23 22:59:48,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-02-23 22:59:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 22:59:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-02-23 22:59:48,540 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2022-02-23 22:59:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:59:48,543 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-02-23 22:59:48,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-02-23 22:59:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-02-23 22:59:48,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-02-23 22:59:48,548 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:59:48,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:59:48,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-23 22:59:48,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:48,749 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:59:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:59:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2022-02-23 22:59:48,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:59:48,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573302809] [2022-02-23 22:59:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:59:48,760 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:59:48,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49718370] [2022-02-23 22:59:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:48,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:48,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:59:48,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 22:59:48,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 22:59:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:48,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 22:59:48,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:59:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 22:59:48,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:59:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 22:59:49,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:59:49,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573302809] [2022-02-23 22:59:49,108 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:59:49,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49718370] [2022-02-23 22:59:49,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49718370] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-23 22:59:49,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-23 22:59:49,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-02-23 22:59:49,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758843002] [2022-02-23 22:59:49,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:59:49,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 22:59:49,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:59:49,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 22:59:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-23 22:59:49,110 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 22:59:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:59:49,134 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-02-23 22:59:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 22:59:49,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-02-23 22:59:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:59:49,135 INFO L225 Difference]: With dead ends: 45 [2022-02-23 22:59:49,135 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 22:59:49,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-23 22:59:49,136 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:59:49,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:59:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 22:59:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 22:59:49,137 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 22:59:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 22:59:49,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-02-23 22:59:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:59:49,138 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 22:59:49,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 22:59:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 22:59:49,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 22:59:49,140 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 22:59:49,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 22:59:49,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:49,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 22:59:49,398 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-23 22:59:49,398 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-23 22:59:49,398 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-23 22:59:49,398 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-23 22:59:49,398 INFO L854 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-02-23 22:59:49,398 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-23 22:59:49,398 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-23 22:59:49,399 INFO L854 garLoopResultBuilder]: At program point mainENTRY(lines 24 46) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-02-23 22:59:49,399 INFO L854 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))) [2022-02-23 22:59:49,399 INFO L854 garLoopResultBuilder]: At program point L34-4(lines 34 43) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))) [2022-02-23 22:59:49,399 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2022-02-23 22:59:49,399 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2022-02-23 22:59:49,399 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ main_~x~0 (* main_~z~0 main_~y~0)) (+ (* main_~z~0 main_~x~0) 1))) [2022-02-23 22:59:49,399 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 24 46) no Hoare annotation was computed. [2022-02-23 22:59:49,399 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 43) no Hoare annotation was computed. [2022-02-23 22:59:49,399 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 24 46) no Hoare annotation was computed. [2022-02-23 22:59:49,400 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-02-23 22:59:49,400 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-02-23 22:59:49,400 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-02-23 22:59:49,400 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-02-23 22:59:49,400 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-02-23 22:59:49,400 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-02-23 22:59:49,403 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-02-23 22:59:49,404 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 22:59:49,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:59:49 BasicIcfg [2022-02-23 22:59:49,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 22:59:49,415 INFO L158 Benchmark]: Toolchain (without parser) took 3075.58ms. Allocated memory was 198.2MB in the beginning and 274.7MB in the end (delta: 76.5MB). Free memory was 143.5MB in the beginning and 139.8MB in the end (delta: 3.7MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2022-02-23 22:59:49,416 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 22:59:49,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.84ms. Allocated memory was 198.2MB in the beginning and 274.7MB in the end (delta: 76.5MB). Free memory was 143.3MB in the beginning and 246.7MB in the end (delta: -103.5MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-02-23 22:59:49,416 INFO L158 Benchmark]: Boogie Preprocessor took 21.85ms. Allocated memory is still 274.7MB. Free memory was 246.7MB in the beginning and 245.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 22:59:49,417 INFO L158 Benchmark]: RCFGBuilder took 209.07ms. Allocated memory is still 274.7MB. Free memory was 245.1MB in the beginning and 235.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-23 22:59:49,417 INFO L158 Benchmark]: IcfgTransformer took 18.54ms. Allocated memory is still 274.7MB. Free memory was 235.2MB in the beginning and 234.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 22:59:49,417 INFO L158 Benchmark]: TraceAbstraction took 2590.16ms. Allocated memory is still 274.7MB. Free memory was 233.6MB in the beginning and 139.8MB in the end (delta: 93.8MB). Peak memory consumption was 93.3MB. Max. memory is 8.0GB. [2022-02-23 22:59:49,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.84ms. Allocated memory was 198.2MB in the beginning and 274.7MB in the end (delta: 76.5MB). Free memory was 143.3MB in the beginning and 246.7MB in the end (delta: -103.5MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.85ms. Allocated memory is still 274.7MB. Free memory was 246.7MB in the beginning and 245.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 209.07ms. Allocated memory is still 274.7MB. Free memory was 245.1MB in the beginning and 235.2MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 18.54ms. Allocated memory is still 274.7MB. Free memory was 235.2MB in the beginning and 234.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2590.16ms. Allocated memory is still 274.7MB. Free memory was 233.6MB in the beginning and 139.8MB in the end (delta: 93.8MB). Peak memory consumption was 93.3MB. 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: 17]: 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, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 248 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 159 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 89 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 27, 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 19 PreInvPairs, 32 NumberOfFragments, 71 HoareAnnotationTreeSize, 19 FomulaSimplifications, 149 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 6 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 11/18 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: 34]: Loop Invariant Derived loop invariant: !(\old(counter) <= 0) || x + z * y == z * x + 1 RESULT: Ultimate proved your program to be correct! [2022-02-23 22:59:49,435 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...