/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:38:48,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:38:48,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:38:48,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:38:48,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:38:48,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:38:48,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:38:48,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:38:48,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:38:48,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:38:48,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:38:48,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:38:48,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:38:48,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:38:48,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:38:48,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:38:48,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:38:48,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:38:48,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:38:48,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:38:48,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:38:48,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:38:48,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:38:48,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:38:48,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:38:48,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:38:48,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:38:48,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:38:48,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:38:48,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:38:48,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:38:48,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:38:48,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:38:48,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:38:48,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:38:48,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:38:48,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:38:48,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:38:48,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:38:48,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:38:48,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:38:48,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 22:38:48,540 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:38:48,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:38:48,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:38:48,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:38:48,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:38:48,542 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:38:48,542 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:38:48,542 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:38:48,542 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:38:48,542 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:38:48,543 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:38:48,543 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:38:48,543 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:38:48,543 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:38:48,543 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:38:48,543 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:38:48,543 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:38:48,543 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:38:48,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:38:48,544 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:38:48,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:38:48,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:38:48,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:38:48,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:38:48,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:38:48,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:38:48,544 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:38:48,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:38:48,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:38:48,545 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:38:48,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:38:48,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:38:48,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:38:48,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:38:48,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:38:48,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:38:48,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:38:48,727 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:38:48,728 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:38:48,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c [2023-04-02 22:38:49,735 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:38:49,897 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:38:49,897 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c [2023-04-02 22:38:49,902 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839a1f998/5cc31a34220e436e92cdbac490e40660/FLAG727924693 [2023-04-02 22:38:49,920 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/839a1f998/5cc31a34220e436e92cdbac490e40660 [2023-04-02 22:38:49,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:38:49,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:38:49,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:38:49,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:38:49,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:38:49,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:38:49" (1/1) ... [2023-04-02 22:38:49,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc25f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:49, skipping insertion in model container [2023-04-02 22:38:49,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:38:49" (1/1) ... [2023-04-02 22:38:49,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:38:49,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:38:50,058 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c[576,589] [2023-04-02 22:38:50,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:38:50,079 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:38:50,089 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c[576,589] [2023-04-02 22:38:50,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:38:50,113 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:38:50,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50 WrapperNode [2023-04-02 22:38:50,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:38:50,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:38:50,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:38:50,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:38:50,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:38:50,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:38:50,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:38:50,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:38:50,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (1/1) ... [2023-04-02 22:38:50,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:38:50,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:38:50,165 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) [2023-04-02 22:38:50,198 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 [2023-04-02 22:38:50,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:38:50,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:38:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:38:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:38:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:38:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:38:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:38:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:38:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:38:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:38:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:38:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:38:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:38:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:38:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:38:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:38:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:38:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:38:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:38:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:38:50,256 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:38:50,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:38:50,351 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:38:50,370 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:38:50,371 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 22:38:50,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:38:50 BoogieIcfgContainer [2023-04-02 22:38:50,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:38:50,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:38:50,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:38:50,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:38:50,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:38:49" (1/3) ... [2023-04-02 22:38:50,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431179ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:38:50, skipping insertion in model container [2023-04-02 22:38:50,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:38:50" (2/3) ... [2023-04-02 22:38:50,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431179ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:38:50, skipping insertion in model container [2023-04-02 22:38:50,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:38:50" (3/3) ... [2023-04-02 22:38:50,377 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound5.c [2023-04-02 22:38:50,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:38:50,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:38:50,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:38:50,421 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d3124f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:38:50,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:38:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 22:38:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 22:38:50,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:38:50,429 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:38:50,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:38:50,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:38:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash -914639077, now seen corresponding path program 1 times [2023-04-02 22:38:50,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:38:50,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18873163] [2023-04-02 22:38:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:50,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:38:50,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:38:50,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966028477] [2023-04-02 22:38:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:50,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:50,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:38:50,553 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) [2023-04-02 22:38:50,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 22:38:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:38:50,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 22:38:50,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:38:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 22:38:50,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:38:50,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:38:50,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18873163] [2023-04-02 22:38:50,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:38:50,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966028477] [2023-04-02 22:38:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966028477] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:38:50,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:38:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 22:38:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169704013] [2023-04-02 22:38:50,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:38:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 22:38:50,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:38:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 22:38:50,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 22:38:50,777 INFO L87 Difference]: Start difference. First operand has 35 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 22:38:50,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:38:50,930 INFO L93 Difference]: Finished difference Result 69 states and 106 transitions. [2023-04-02 22:38:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:38:50,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 21 [2023-04-02 22:38:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:38:50,939 INFO L225 Difference]: With dead ends: 69 [2023-04-02 22:38:50,939 INFO L226 Difference]: Without dead ends: 40 [2023-04-02 22:38:50,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 22:38:50,950 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 29 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:38:50,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 120 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:38:50,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-04-02 22:38:50,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2023-04-02 22:38:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 22:38:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-04-02 22:38:50,982 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 21 [2023-04-02 22:38:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:38:50,983 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-04-02 22:38:50,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 22:38:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-04-02 22:38:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 22:38:50,984 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:38:50,984 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:38:50,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 22:38:51,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 22:38:51,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:38:51,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:38:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1981824872, now seen corresponding path program 1 times [2023-04-02 22:38:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:38:51,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503401561] [2023-04-02 22:38:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:38:51,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:38:51,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828526154] [2023-04-02 22:38:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:51,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:38:51,205 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) [2023-04-02 22:38:51,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 22:38:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:38:51,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 22:38:51,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:38:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 22:38:51,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:38:51,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:38:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503401561] [2023-04-02 22:38:51,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:38:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828526154] [2023-04-02 22:38:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828526154] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:38:51,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:38:51,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 22:38:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148497795] [2023-04-02 22:38:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:38:51,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 22:38:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:38:51,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 22:38:51,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-02 22:38:51,334 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 22:38:51,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:38:51,417 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2023-04-02 22:38:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:38:51,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 26 [2023-04-02 22:38:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:38:51,419 INFO L225 Difference]: With dead ends: 54 [2023-04-02 22:38:51,419 INFO L226 Difference]: Without dead ends: 51 [2023-04-02 22:38:51,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 22:38:51,420 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 26 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:38:51,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 107 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:38:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-04-02 22:38:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-04-02 22:38:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 22:38:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-04-02 22:38:51,428 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 26 [2023-04-02 22:38:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:38:51,429 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-04-02 22:38:51,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-02 22:38:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-04-02 22:38:51,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 22:38:51,429 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:38:51,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:38:51,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 22:38:51,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 22:38:51,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:38:51,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:38:51,635 INFO L85 PathProgramCache]: Analyzing trace with hash -323255580, now seen corresponding path program 1 times [2023-04-02 22:38:51,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:38:51,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842675771] [2023-04-02 22:38:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:51,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:38:51,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:38:51,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403949977] [2023-04-02 22:38:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:51,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:51,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:38:51,647 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) [2023-04-02 22:38:51,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 22:38:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:38:51,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 22:38:51,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:38:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 22:38:51,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:38:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 22:38:51,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:38:51,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842675771] [2023-04-02 22:38:51,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:38:51,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403949977] [2023-04-02 22:38:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403949977] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 22:38:51,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:38:51,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-04-02 22:38:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300933866] [2023-04-02 22:38:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:38:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:38:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:38:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:38:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-02 22:38:51,795 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 22:38:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:38:51,841 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2023-04-02 22:38:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:38:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2023-04-02 22:38:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:38:51,842 INFO L225 Difference]: With dead ends: 56 [2023-04-02 22:38:51,842 INFO L226 Difference]: Without dead ends: 54 [2023-04-02 22:38:51,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-02 22:38:51,843 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:38:51,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 81 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:38:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-04-02 22:38:51,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-04-02 22:38:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 22:38:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-04-02 22:38:51,853 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 33 [2023-04-02 22:38:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:38:51,853 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-04-02 22:38:51,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 22:38:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2023-04-02 22:38:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-02 22:38:51,854 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:38:51,854 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:38:51,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 22:38:52,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:52,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:38:52,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:38:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1792215940, now seen corresponding path program 1 times [2023-04-02 22:38:52,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:38:52,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126673202] [2023-04-02 22:38:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:38:52,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:38:52,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900290666] [2023-04-02 22:38:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:52,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:52,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:38:52,074 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) [2023-04-02 22:38:52,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 22:38:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:38:52,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 22:38:52,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:38:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 22:38:52,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:38:52,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:38:52,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126673202] [2023-04-02 22:38:52,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:38:52,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900290666] [2023-04-02 22:38:52,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900290666] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:38:52,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:38:52,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 22:38:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700352105] [2023-04-02 22:38:52,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:38:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 22:38:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:38:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 22:38:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 22:38:52,165 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 22:38:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:38:52,242 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-04-02 22:38:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 22:38:52,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 43 [2023-04-02 22:38:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:38:52,244 INFO L225 Difference]: With dead ends: 60 [2023-04-02 22:38:52,244 INFO L226 Difference]: Without dead ends: 58 [2023-04-02 22:38:52,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 22:38:52,244 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:38:52,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 116 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:38:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-04-02 22:38:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-04-02 22:38:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 22:38:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-04-02 22:38:52,254 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 43 [2023-04-02 22:38:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:38:52,254 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-04-02 22:38:52,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-02 22:38:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-04-02 22:38:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-02 22:38:52,255 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:38:52,255 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:38:52,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 22:38:52,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:52,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:38:52,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:38:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1685591713, now seen corresponding path program 1 times [2023-04-02 22:38:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:38:52,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293153388] [2023-04-02 22:38:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:52,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:38:52,473 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:38:52,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773945698] [2023-04-02 22:38:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:52,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:52,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:38:52,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:38:52,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 22:38:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:38:52,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 22:38:52,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:38:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 22:38:52,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:38:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 22:38:52,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:38:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293153388] [2023-04-02 22:38:52,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:38:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773945698] [2023-04-02 22:38:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773945698] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:38:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1333888414] [2023-04-02 22:38:52,762 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-04-02 22:38:52,762 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:38:52,764 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:38:52,767 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:38:52,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:38:52,804 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:38:53,105 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:38:53,108 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:38:53,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:38:53,113 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:38:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1333888414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:38:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:38:53,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [9, 8] total 28 [2023-04-02 22:38:53,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707807917] [2023-04-02 22:38:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:38:53,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 22:38:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:38:53,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 22:38:53,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:38:53,475 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 16 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-02 22:38:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:38:54,317 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2023-04-02 22:38:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 22:38:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 49 [2023-04-02 22:38:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:38:54,318 INFO L225 Difference]: With dead ends: 84 [2023-04-02 22:38:54,318 INFO L226 Difference]: Without dead ends: 82 [2023-04-02 22:38:54,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 22:38:54,320 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 95 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:38:54,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:38:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-04-02 22:38:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2023-04-02 22:38:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 46 states have (on average 1.108695652173913) internal successors, (51), 48 states have internal predecessors, (51), 22 states have call successors, (22), 12 states have call predecessors, (22), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 22:38:54,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2023-04-02 22:38:54,334 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 49 [2023-04-02 22:38:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:38:54,334 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2023-04-02 22:38:54,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-02 22:38:54,335 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2023-04-02 22:38:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 22:38:54,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:38:54,336 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:38:54,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 22:38:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:54,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:38:54,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:38:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1075151994, now seen corresponding path program 1 times [2023-04-02 22:38:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:38:54,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137733512] [2023-04-02 22:38:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:38:54,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:38:54,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427669583] [2023-04-02 22:38:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:54,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:54,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:38:54,550 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:38:54,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 22:38:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:38:54,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-02 22:38:54,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:38:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-04-02 22:38:54,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:38:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-04-02 22:38:54,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:38:54,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137733512] [2023-04-02 22:38:54,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:38:54,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427669583] [2023-04-02 22:38:54,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427669583] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 22:38:54,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:38:54,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-04-02 22:38:54,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801589696] [2023-04-02 22:38:54,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:38:54,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 22:38:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:38:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 22:38:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-04-02 22:38:54,890 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-02 22:38:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:38:55,059 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2023-04-02 22:38:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:38:55,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 56 [2023-04-02 22:38:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:38:55,061 INFO L225 Difference]: With dead ends: 86 [2023-04-02 22:38:55,061 INFO L226 Difference]: Without dead ends: 83 [2023-04-02 22:38:55,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-04-02 22:38:55,062 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:38:55,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 90 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:38:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-04-02 22:38:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-04-02 22:38:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 50 states have internal predecessors, (53), 21 states have call successors, (21), 13 states have call predecessors, (21), 12 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 22:38:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2023-04-02 22:38:55,080 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 56 [2023-04-02 22:38:55,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:38:55,080 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2023-04-02 22:38:55,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-02 22:38:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2023-04-02 22:38:55,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 22:38:55,081 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:38:55,082 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:38:55,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-02 22:38:55,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:55,286 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:38:55,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:38:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash -863199907, now seen corresponding path program 1 times [2023-04-02 22:38:55,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:38:55,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203231823] [2023-04-02 22:38:55,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:55,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:38:55,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:38:55,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544842451] [2023-04-02 22:38:55,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:38:55,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:55,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:38:55,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:38:55,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 22:38:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:38:55,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 22:38:55,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:38:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-04-02 22:38:55,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:38:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-04-02 22:38:55,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:38:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203231823] [2023-04-02 22:38:55,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:38:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544842451] [2023-04-02 22:38:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544842451] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:38:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1557835251] [2023-04-02 22:38:55,456 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-04-02 22:38:55,456 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:38:55,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:38:55,456 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:38:55,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:38:55,466 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:38:56,223 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:38:56,226 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:38:56,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:38:56,228 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:38:56,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2829#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:38:56,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:38:56,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:38:56,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-04-02 22:38:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062888532] [2023-04-02 22:38:56,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:38:56,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 22:38:56,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:38:56,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 22:38:56,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2023-04-02 22:38:56,912 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 22:38:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:38:57,008 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2023-04-02 22:38:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:38:57,009 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 72 [2023-04-02 22:38:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:38:57,009 INFO L225 Difference]: With dead ends: 83 [2023-04-02 22:38:57,009 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:38:57,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 184 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:38:57,010 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:38:57,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 94 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:38:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:38:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:38:57,011 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) [2023-04-02 22:38:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:38:57,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2023-04-02 22:38:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:38:57,011 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:38:57,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 22:38:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:38:57,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:38:57,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:38:57,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 22:38:57,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:38:57,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:38:58,630 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2023-04-02 22:38:58,630 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 8) no Hoare annotation was computed. [2023-04-02 22:38:58,630 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-04-02 22:38:58,630 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-04-02 22:38:58,630 INFO L899 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2023-04-02 22:38:58,631 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-04-02 22:38:58,631 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (and (<= main_~y~0 2147483647) (<= 0 main_~x~0) (<= main_~x~0 5) (<= 0 (+ main_~y~0 2147483648))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,631 INFO L895 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (and (<= 0 main_~y~0) (<= 0 main_~x~0) (<= main_~x~0 5) (<= main_~y~0 5)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,631 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,632 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-04-02 22:38:58,632 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 66) no Hoare annotation was computed. [2023-04-02 22:38:58,632 INFO L899 garLoopResultBuilder]: For program point L50(lines 47 59) no Hoare annotation was computed. [2023-04-02 22:38:58,632 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (let ((.cse1 (* main_~a~0 main_~y~0))) (and (<= 0 main_~x~0) (<= 1 main_~r~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse1) (+ main_~b~0 main_~x~0)) (<= 1 main_~y~0) (= main_~b~0 .cse1) (<= main_~y~0 5))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,632 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (let ((.cse1 (* main_~a~0 main_~y~0))) (and (<= 0 main_~x~0) (<= 1 main_~r~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse1) (+ main_~b~0 main_~x~0)) (<= 1 main_~y~0) (= main_~b~0 .cse1) (<= main_~y~0 5))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,632 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 66) the Hoare annotation is: true [2023-04-02 22:38:58,632 INFO L899 garLoopResultBuilder]: For program point L40(lines 38 62) no Hoare annotation was computed. [2023-04-02 22:38:58,632 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (let ((.cse1 (* main_~a~0 main_~y~0))) (and (<= 0 main_~x~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse1) (+ main_~b~0 main_~x~0)) (<= 1 main_~y~0) (= main_~b~0 .cse1) (<= main_~y~0 5))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,633 INFO L895 garLoopResultBuilder]: At program point L38-3(lines 38 62) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse2 (<= 1 main_~y~0)) (.cse3 (<= main_~y~0 5))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (let ((.cse1 (* main_~a~0 main_~y~0))) (and (<= 0 main_~x~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse1) (+ main_~b~0 main_~x~0)) .cse2 (= main_~b~0 .cse1) .cse3)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (= main_~x~0 main_~r~0) (= main_~q~0 0) .cse2 .cse3) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,633 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (or (let ((.cse0 (* main_~a~0 main_~y~0))) (and (<= (* 2 .cse0) main_~r~0) (<= 0 main_~x~0) (<= 1 main_~r~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse0) (+ main_~b~0 main_~x~0)) (<= 1 main_~y~0) (= main_~b~0 .cse0) (<= main_~y~0 5))) (not (= (select .cse1 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,633 INFO L899 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2023-04-02 22:38:58,633 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (let ((.cse1 (* main_~a~0 main_~y~0))) (and (<= 0 main_~x~0) (<= 1 main_~r~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse1) (+ main_~b~0 main_~x~0)) (<= 1 main_~y~0) (= main_~b~0 .cse1) (<= main_~y~0 5))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,633 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (let ((.cse1 (* main_~a~0 main_~y~0))) (and (<= 0 main_~x~0) (<= 1 main_~r~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse1) (+ main_~b~0 main_~x~0)) (<= 1 main_~y~0) (= main_~b~0 .cse1) (<= main_~y~0 5))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,633 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2023-04-02 22:38:58,634 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (let ((.cse1 (* main_~a~0 main_~y~0))) (and (<= 0 main_~x~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse1) (+ main_~b~0 main_~x~0)) (<= 1 main_~y~0) (= main_~b~0 .cse1) (<= main_~y~0 5))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,634 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (let ((.cse1 (* main_~a~0 main_~y~0))) (and (<= 0 main_~x~0) (<= main_~x~0 5) (= (+ (* main_~q~0 main_~y~0) main_~r~0 .cse1) (+ main_~b~0 main_~x~0)) (<= 1 main_~y~0) (= main_~b~0 .cse1) (<= main_~y~0 5))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= 14 (select |#length| 2))) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:38:58,634 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 22:38:58,634 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:38:58,634 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:38:58,634 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= 14 (select |#length| 2)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 22:38:58,634 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:38:58,634 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:38:58,634 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-04-02 22:38:58,634 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-04-02 22:38:58,635 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-04-02 22:38:58,635 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-04-02 22:38:58,635 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-04-02 22:38:58,635 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-04-02 22:38:58,637 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:38:58,638 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:38:58,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:38:58 BoogieIcfgContainer [2023-04-02 22:38:58,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:38:58,649 INFO L158 Benchmark]: Toolchain (without parser) took 8726.02ms. Allocated memory was 277.9MB in the beginning and 333.4MB in the end (delta: 55.6MB). Free memory was 242.4MB in the beginning and 245.6MB in the end (delta: -3.2MB). Peak memory consumption was 189.3MB. Max. memory is 8.0GB. [2023-04-02 22:38:58,649 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:38:58,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.22ms. Allocated memory is still 277.9MB. Free memory was 242.4MB in the beginning and 232.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:38:58,649 INFO L158 Benchmark]: Boogie Preprocessor took 29.59ms. Allocated memory is still 277.9MB. Free memory was 232.0MB in the beginning and 230.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 22:38:58,649 INFO L158 Benchmark]: RCFGBuilder took 228.49ms. Allocated memory is still 277.9MB. Free memory was 230.4MB in the beginning and 217.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 22:38:58,649 INFO L158 Benchmark]: TraceAbstraction took 8274.70ms. Allocated memory was 277.9MB in the beginning and 333.4MB in the end (delta: 55.6MB). Free memory was 216.8MB in the beginning and 245.6MB in the end (delta: -28.8MB). Peak memory consumption was 164.2MB. Max. memory is 8.0GB. [2023-04-02 22:38:58,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.22ms. Allocated memory is still 277.9MB. Free memory was 242.4MB in the beginning and 232.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.59ms. Allocated memory is still 277.9MB. Free memory was 232.0MB in the beginning and 230.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 228.49ms. Allocated memory is still 277.9MB. Free memory was 230.4MB in the beginning and 217.7MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 8274.70ms. Allocated memory was 277.9MB in the beginning and 333.4MB in the end (delta: 55.6MB). Free memory was 216.8MB in the beginning and 245.6MB in the end (delta: -28.8MB). Peak memory consumption was 164.2MB. 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 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 216 mSDsluCounter, 613 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 443 mSDsCounter, 157 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 826 IncrementalHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 157 mSolverCounterUnsat, 170 mSDtfsCounter, 826 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 646 GetRequests, 528 SyntacticMatches, 8 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=6, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 44 PreInvPairs, 67 NumberOfFragments, 1252 HoareAnnotationTreeSize, 44 FomulaSimplifications, 325 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 2624 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 300 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 499 ConstructedInterpolants, 0 QuantifiedInterpolants, 1242 SizeOfPredicates, 27 NumberOfNonLiveVariables, 903 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 674/702 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: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 33, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 29, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 18, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 65, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 84, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 33, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 33, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 18, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 460, DAG_COMPRESSION_RETAINED_NODES: 92, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || ((((((0 <= x && 1 <= r) && x <= 5) && q * y + r + a * y == b + x) && 1 <= y) && b == a * y) && y <= 5)) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || !(14 == unknown-#length-unknown[2])) || unknown-#StackHeapBarrier-unknown <= 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || (((((0 <= x && x <= 5) && q * y + r + a * y == b + x) && 1 <= y) && b == a * y) && y <= 5)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || !(14 == unknown-#length-unknown[2])) || unknown-#StackHeapBarrier-unknown <= 0 RESULT: Ultimate proved your program to be correct! [2023-04-02 22:38:58,673 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...