./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 06:32:19,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:32:19,262 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:32:19,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:32:19,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:32:19,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:32:19,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:32:19,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:32:19,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:32:19,304 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:32:19,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:32:19,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:32:19,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:32:19,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:32:19,310 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:32:19,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:32:19,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:32:19,311 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:32:19,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:32:19,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:32:19,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:32:19,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:32:19,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:32:19,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:32:19,313 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:32:19,313 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:32:19,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:32:19,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:32:19,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:32:19,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:32:19,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:32:19,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:32:19,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:32:19,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:32:19,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:32:19,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:32:19,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:32:19,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:32:19,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:32:19,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:32:19,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:32:19,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:32:19,318 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:32:19,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:32:19,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:32:19,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:32:19,596 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:32:19,597 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:32:19,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-13 06:32:21,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:32:21,201 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:32:21,202 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-13 06:32:21,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bbb5f5e7f/03b052db7c2a482d85b7a0025aa30032/FLAGe72e6fb1d [2024-09-13 06:32:21,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bbb5f5e7f/03b052db7c2a482d85b7a0025aa30032 [2024-09-13 06:32:21,594 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:32:21,595 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:32:21,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/witness-2.1.yml [2024-09-13 06:32:21,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:32:21,637 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:32:21,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:32:21,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:32:21,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:32:21,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:32:21" (1/2) ... [2024-09-13 06:32:21,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12dcf0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:32:21, skipping insertion in model container [2024-09-13 06:32:21,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:32:21" (1/2) ... [2024-09-13 06:32:21,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5055623d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:32:21, skipping insertion in model container [2024-09-13 06:32:21,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:32:21" (2/2) ... [2024-09-13 06:32:21,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12dcf0ff and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21, skipping insertion in model container [2024-09-13 06:32:21,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:32:21" (2/2) ... [2024-09-13 06:32:21,650 INFO L90 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-09-13 06:32:21,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:32:21,805 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-13 06:32:21,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:32:21,822 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 06:32:21,837 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-13 06:32:21,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:32:21,859 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:32:21,860 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21 WrapperNode [2024-09-13 06:32:21,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:32:21,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:32:21,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:32:21,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:32:21,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,891 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2024-09-13 06:32:21,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:32:21,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:32:21,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:32:21,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:32:21,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,925 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1]. The 4 writes are split as follows [0, 2, 2]. [2024-09-13 06:32:21,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:32:21,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:32:21,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:32:21,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:32:21,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (1/1) ... [2024-09-13 06:32:21,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:32:21,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:21,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 06:32:21,981 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 06:32:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:32:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 06:32:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 06:32:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-13 06:32:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 06:32:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-13 06:32:22,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-13 06:32:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-13 06:32:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-13 06:32:22,032 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-13 06:32:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:32:22,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:32:22,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 06:32:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 06:32:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-13 06:32:22,033 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-13 06:32:22,034 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-13 06:32:22,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 06:32:22,097 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:32:22,099 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:32:22,221 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-13 06:32:22,221 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:32:22,252 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:32:22,252 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 06:32:22,253 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:32:22 BoogieIcfgContainer [2024-09-13 06:32:22,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:32:22,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:32:22,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:32:22,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:32:22,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:32:21" (1/4) ... [2024-09-13 06:32:22,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb00082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:32:22, skipping insertion in model container [2024-09-13 06:32:22,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:32:21" (2/4) ... [2024-09-13 06:32:22,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb00082 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:32:22, skipping insertion in model container [2024-09-13 06:32:22,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:21" (3/4) ... [2024-09-13 06:32:22,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb00082 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:32:22, skipping insertion in model container [2024-09-13 06:32:22,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:32:22" (4/4) ... [2024-09-13 06:32:22,262 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-13 06:32:22,275 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:32:22,276 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 06:32:22,311 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:32:22,316 INFO L336 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@4f9db67e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:32:22,316 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 06:32:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:32:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-13 06:32:22,324 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:22,325 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:22,325 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:22,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash 855928239, now seen corresponding path program 1 times [2024-09-13 06:32:22,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:22,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767564849] [2024-09-13 06:32:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:22,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:22,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:32:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:22,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767564849] [2024-09-13 06:32:22,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767564849] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:32:22,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:32:22,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:32:22,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575644721] [2024-09-13 06:32:22,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:32:22,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:32:22,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:32:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:32:22,920 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:32:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:23,036 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-09-13 06:32:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:32:23,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-13 06:32:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:23,046 INFO L225 Difference]: With dead ends: 25 [2024-09-13 06:32:23,046 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 06:32:23,049 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 06:32:23,054 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:23,054 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:32:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 06:32:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-13 06:32:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 06:32:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-13 06:32:23,091 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2024-09-13 06:32:23,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:23,092 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-13 06:32:23,092 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:32:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-13 06:32:23,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 06:32:23,093 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:23,094 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:23,094 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 06:32:23,094 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:23,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:23,095 INFO L85 PathProgramCache]: Analyzing trace with hash 255373073, now seen corresponding path program 1 times [2024-09-13 06:32:23,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:23,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184219378] [2024-09-13 06:32:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:23,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:23,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:23,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:23,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-13 06:32:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 06:32:23,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:23,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184219378] [2024-09-13 06:32:23,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184219378] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:32:23,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:32:23,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 06:32:23,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581961420] [2024-09-13 06:32:23,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:32:23,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 06:32:23,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:23,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 06:32:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:32:23,424 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 06:32:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:23,512 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-09-13 06:32:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:32:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2024-09-13 06:32:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:23,513 INFO L225 Difference]: With dead ends: 23 [2024-09-13 06:32:23,514 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 06:32:23,514 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-13 06:32:23,515 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:23,516 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:32:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 06:32:23,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-13 06:32:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-13 06:32:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-13 06:32:23,523 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 21 [2024-09-13 06:32:23,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:23,524 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-13 06:32:23,524 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 06:32:23,524 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-13 06:32:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 06:32:23,526 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:23,526 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:23,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 06:32:23,526 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:23,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1037516303, now seen corresponding path program 1 times [2024-09-13 06:32:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:23,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564796920] [2024-09-13 06:32:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:23,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:23,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:23,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:24,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:24,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 06:32:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 06:32:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564796920] [2024-09-13 06:32:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564796920] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:32:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714173376] [2024-09-13 06:32:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:24,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:32:24,144 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 06:32:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:24,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-13 06:32:24,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:24,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 06:32:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 06:32:24,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:32:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 06:32:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714173376] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:32:25,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:32:25,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 25 [2024-09-13 06:32:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404735749] [2024-09-13 06:32:25,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:32:25,028 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 06:32:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 06:32:25,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-13 06:32:25,030 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-13 06:32:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:25,349 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-13 06:32:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 06:32:25,350 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) Word has length 26 [2024-09-13 06:32:25,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:25,351 INFO L225 Difference]: With dead ends: 27 [2024-09-13 06:32:25,351 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 06:32:25,351 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2024-09-13 06:32:25,352 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:25,353 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 99 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:32:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 06:32:25,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-13 06:32:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 06:32:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-13 06:32:25,358 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 26 [2024-09-13 06:32:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:25,358 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-13 06:32:25,358 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-13 06:32:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-13 06:32:25,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-13 06:32:25,359 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:25,359 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:25,378 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 06:32:25,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:25,561 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:25,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1013053495, now seen corresponding path program 2 times [2024-09-13 06:32:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:25,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824872936] [2024-09-13 06:32:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:25,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:25,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:25,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:25,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:26,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:26,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 06:32:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:26,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:26,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:26,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:26,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 06:32:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-13 06:32:26,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824872936] [2024-09-13 06:32:26,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824872936] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:32:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452458768] [2024-09-13 06:32:26,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:32:26,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:26,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:26,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:32:26,323 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 06:32:26,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:32:26,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:32:26,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-13 06:32:26,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:26,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 06:32:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-13 06:32:26,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:32:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-13 06:32:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452458768] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:32:27,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:32:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 14] total 25 [2024-09-13 06:32:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779203374] [2024-09-13 06:32:27,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:32:27,746 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 06:32:27,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 06:32:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2024-09-13 06:32:27,748 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-13 06:32:27,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:27,914 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-09-13 06:32:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 06:32:27,915 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 52 [2024-09-13 06:32:27,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:27,916 INFO L225 Difference]: With dead ends: 29 [2024-09-13 06:32:27,916 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 06:32:27,916 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2024-09-13 06:32:27,917 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:27,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 122 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:32:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 06:32:27,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-13 06:32:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 06:32:27,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-09-13 06:32:27,928 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 52 [2024-09-13 06:32:27,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:27,930 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-09-13 06:32:27,931 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 20 states have internal predecessors, (41), 8 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-13 06:32:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-09-13 06:32:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-13 06:32:27,932 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:27,932 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:27,951 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 06:32:28,132 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:28,133 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:28,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1464884653, now seen corresponding path program 3 times [2024-09-13 06:32:28,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:28,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859286076] [2024-09-13 06:32:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:28,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:28,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:28,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:28,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:28,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:29,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 06:32:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:29,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:29,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:29,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:29,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:29,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 06:32:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 8 proven. 75 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-13 06:32:29,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:29,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859286076] [2024-09-13 06:32:29,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859286076] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:32:29,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144145479] [2024-09-13 06:32:29,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 06:32:29,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:29,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:29,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:32:29,087 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 06:32:29,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 06:32:29,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:32:29,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-13 06:32:29,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:29,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 06:32:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-09-13 06:32:29,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:32:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-09-13 06:32:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144145479] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:32:30,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:32:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 34 [2024-09-13 06:32:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599104924] [2024-09-13 06:32:30,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:32:30,285 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-13 06:32:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:30,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-13 06:32:30,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 06:32:30,287 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-13 06:32:30,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:30,596 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-13 06:32:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 06:32:30,597 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) Word has length 62 [2024-09-13 06:32:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:30,599 INFO L225 Difference]: With dead ends: 33 [2024-09-13 06:32:30,599 INFO L226 Difference]: Without dead ends: 33 [2024-09-13 06:32:30,600 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 06:32:30,601 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:30,601 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 109 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:32:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-13 06:32:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-13 06:32:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (11), 9 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-13 06:32:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-13 06:32:30,606 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 62 [2024-09-13 06:32:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:30,606 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-13 06:32:30,607 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 28 states have internal predecessors, (49), 13 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-13 06:32:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-13 06:32:30,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-13 06:32:30,609 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:30,609 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:30,624 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 06:32:30,813 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:30,814 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:30,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:30,814 INFO L85 PathProgramCache]: Analyzing trace with hash -365015879, now seen corresponding path program 4 times [2024-09-13 06:32:30,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:30,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506321936] [2024-09-13 06:32:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:30,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:31,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:31,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:31,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 06:32:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 06:32:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 06:32:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 6 proven. 212 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-13 06:32:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:32,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506321936] [2024-09-13 06:32:32,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506321936] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:32:32,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616480158] [2024-09-13 06:32:32,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 06:32:32,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:32,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:32,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:32:32,281 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 06:32:32,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 06:32:32,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:32:32,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-13 06:32:32,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:32,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 06:32:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 363 proven. 24 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-09-13 06:32:32,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:32:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 127 proven. 165 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-09-13 06:32:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616480158] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:32:34,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:32:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 22] total 35 [2024-09-13 06:32:34,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171971707] [2024-09-13 06:32:34,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:32:34,870 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 06:32:34,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:34,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 06:32:34,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=947, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 06:32:34,871 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-13 06:32:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:35,046 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-09-13 06:32:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 06:32:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 103 [2024-09-13 06:32:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:35,048 INFO L225 Difference]: With dead ends: 35 [2024-09-13 06:32:35,048 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 06:32:35,049 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 06:32:35,049 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:35,050 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 181 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:32:35,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 06:32:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-13 06:32:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 06:32:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-13 06:32:35,055 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 103 [2024-09-13 06:32:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:35,056 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-13 06:32:35,056 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 2.0) internal successors, (54), 28 states have internal predecessors, (54), 10 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-13 06:32:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-13 06:32:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-13 06:32:35,058 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:35,058 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:35,071 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 06:32:35,259 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:35,260 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:35,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 620375637, now seen corresponding path program 5 times [2024-09-13 06:32:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:35,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829418205] [2024-09-13 06:32:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:35,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:36,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:36,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:36,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:36,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:36,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 06:32:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 06:32:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 06:32:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 307 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-09-13 06:32:37,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:37,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829418205] [2024-09-13 06:32:37,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829418205] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:32:37,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404475473] [2024-09-13 06:32:37,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 06:32:37,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:37,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:37,180 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:32:37,181 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 06:32:37,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-13 06:32:37,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:32:37,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-13 06:32:37,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:37,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 06:32:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 346 proven. 35 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-13 06:32:37,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:32:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 6 proven. 414 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-13 06:32:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404475473] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:32:40,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:32:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 26] total 39 [2024-09-13 06:32:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773245868] [2024-09-13 06:32:40,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:32:40,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-13 06:32:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-13 06:32:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 06:32:40,200 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-13 06:32:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:40,388 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2024-09-13 06:32:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 06:32:40,389 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) Word has length 118 [2024-09-13 06:32:40,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:40,390 INFO L225 Difference]: With dead ends: 37 [2024-09-13 06:32:40,390 INFO L226 Difference]: Without dead ends: 37 [2024-09-13 06:32:40,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 249 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=413, Invalid=1393, Unknown=0, NotChecked=0, Total=1806 [2024-09-13 06:32:40,392 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:40,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 154 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:32:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-13 06:32:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-13 06:32:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 11 states have return successors, (13), 11 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 06:32:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-09-13 06:32:40,397 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 118 [2024-09-13 06:32:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:40,397 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-09-13 06:32:40,398 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 31 states have internal predecessors, (57), 10 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-13 06:32:40,398 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-09-13 06:32:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-13 06:32:40,399 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:40,399 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:40,418 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 06:32:40,603 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 06:32:40,603 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:40,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -149039543, now seen corresponding path program 6 times [2024-09-13 06:32:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:40,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684539700] [2024-09-13 06:32:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:40,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:41,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-09-13 06:32:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:42,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684539700] [2024-09-13 06:32:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684539700] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:32:42,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339345893] [2024-09-13 06:32:42,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 06:32:42,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:42,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:42,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:32:42,299 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 06:32:42,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-13 06:32:42,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:32:42,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-13 06:32:42,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:42,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 06:32:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2024-09-13 06:32:42,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:32:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2024-09-13 06:32:43,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339345893] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:32:43,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:32:43,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 18] total 37 [2024-09-13 06:32:43,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991305411] [2024-09-13 06:32:43,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:32:43,907 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-13 06:32:43,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-13 06:32:43,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 06:32:43,909 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-13 06:32:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:44,146 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-09-13 06:32:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 06:32:44,147 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) Word has length 133 [2024-09-13 06:32:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:44,148 INFO L225 Difference]: With dead ends: 40 [2024-09-13 06:32:44,148 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 06:32:44,149 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=350, Invalid=1210, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 06:32:44,149 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:44,150 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 102 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:32:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 06:32:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-09-13 06:32:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (14), 12 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-13 06:32:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-13 06:32:44,163 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 133 [2024-09-13 06:32:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:44,164 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-13 06:32:44,164 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 13 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (17), 16 states have call predecessors, (17), 13 states have call successors, (17) [2024-09-13 06:32:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-13 06:32:44,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-13 06:32:44,169 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:44,170 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:44,188 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 06:32:44,370 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:44,371 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:44,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:44,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1739371329, now seen corresponding path program 7 times [2024-09-13 06:32:44,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:44,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259071543] [2024-09-13 06:32:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:44,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:45,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:46,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 1802 trivial. 0 not checked. [2024-09-13 06:32:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259071543] [2024-09-13 06:32:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259071543] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:32:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785543463] [2024-09-13 06:32:47,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 06:32:47,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:47,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:47,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:32:47,346 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 06:32:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:47,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-13 06:32:47,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:47,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 06:32:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2024-09-13 06:32:47,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:32:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2024-09-13 06:32:49,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785543463] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:32:49,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:32:49,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 22] total 49 [2024-09-13 06:32:49,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120741370] [2024-09-13 06:32:49,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:32:49,623 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-13 06:32:49,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-13 06:32:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1919, Unknown=0, NotChecked=0, Total=2352 [2024-09-13 06:32:49,629 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) [2024-09-13 06:32:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:50,028 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2024-09-13 06:32:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 06:32:50,029 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) Word has length 174 [2024-09-13 06:32:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:50,031 INFO L225 Difference]: With dead ends: 46 [2024-09-13 06:32:50,031 INFO L226 Difference]: Without dead ends: 46 [2024-09-13 06:32:50,032 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=621, Invalid=2571, Unknown=0, NotChecked=0, Total=3192 [2024-09-13 06:32:50,036 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:50,036 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 61 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:32:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-13 06:32:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-09-13 06:32:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (17), 15 states have call predecessors, (17), 4 states have call successors, (17) [2024-09-13 06:32:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-09-13 06:32:50,045 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 174 [2024-09-13 06:32:50,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:50,045 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-09-13 06:32:50,046 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 41 states have internal predecessors, (59), 19 states have call successors, (21), 9 states have call predecessors, (21), 16 states have return successors, (23), 22 states have call predecessors, (23), 19 states have call successors, (23) [2024-09-13 06:32:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-09-13 06:32:50,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-09-13 06:32:50,048 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:50,048 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 30, 30, 30, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:50,067 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 06:32:50,249 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:50,249 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:50,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:50,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1394733523, now seen corresponding path program 1 times [2024-09-13 06:32:50,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:50,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724556104] [2024-09-13 06:32:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:50,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:51,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:52,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:52,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:52,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:52,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:52,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:52,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:52,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:52,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:53,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 2854 trivial. 0 not checked. [2024-09-13 06:32:54,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:32:54,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724556104] [2024-09-13 06:32:54,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724556104] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:32:54,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955425218] [2024-09-13 06:32:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:54,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:54,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:54,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:32:54,435 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 06:32:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:54,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-13 06:32:54,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:54,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-13 06:32:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2870 trivial. 0 not checked. [2024-09-13 06:32:55,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:32:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2815 trivial. 0 not checked. [2024-09-13 06:32:57,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955425218] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:32:57,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:32:57,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 26] total 46 [2024-09-13 06:32:57,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762735521] [2024-09-13 06:32:57,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:32:57,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-13 06:32:57,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:32:57,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-13 06:32:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1676, Unknown=0, NotChecked=0, Total=2070 [2024-09-13 06:32:57,418 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) [2024-09-13 06:32:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:32:57,815 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-09-13 06:32:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 06:32:57,816 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) Word has length 215 [2024-09-13 06:32:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:32:57,817 INFO L225 Difference]: With dead ends: 43 [2024-09-13 06:32:57,817 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 06:32:57,818 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 478 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=577, Invalid=2179, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 06:32:57,819 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:32:57,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 165 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:32:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 06:32:57,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-13 06:32:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-13 06:32:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-09-13 06:32:57,829 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 215 [2024-09-13 06:32:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:32:57,829 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-09-13 06:32:57,830 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 36 states have (on average 1.5) internal successors, (54), 37 states have internal predecessors, (54), 18 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (26), 20 states have call predecessors, (26), 18 states have call successors, (26) [2024-09-13 06:32:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-09-13 06:32:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-13 06:32:57,836 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:57,836 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:32:57,855 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 06:32:58,036 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:58,037 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:32:58,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1043833273, now seen corresponding path program 8 times [2024-09-13 06:32:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:58,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686074071] [2024-09-13 06:32:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:58,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:32:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:59,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:59,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:59,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:59,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:59,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:59,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:59,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:32:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:59,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:32:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:00,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:00,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:00,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:00,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:00,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:00,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:00,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:00,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:01,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 937 proven. 34 refuted. 0 times theorem prover too weak. 3232 trivial. 0 not checked. [2024-09-13 06:33:02,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686074071] [2024-09-13 06:33:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686074071] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:33:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980738751] [2024-09-13 06:33:02,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:33:02,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:33:02,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:33:02,447 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:33:02,448 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 06:33:02,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:33:02,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:33:02,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-13 06:33:02,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:33:02,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-13 06:33:03,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-13 06:33:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1171 proven. 81 refuted. 0 times theorem prover too weak. 2951 trivial. 0 not checked. [2024-09-13 06:33:03,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:33:04,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-13 06:33:04,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-13 06:33:04,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-13 06:33:05,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-13 06:33:05,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-09-13 06:33:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980738751] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:33:06,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 06:33:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 23 [2024-09-13 06:33:06,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89413178] [2024-09-13 06:33:06,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 06:33:06,258 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 06:33:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 06:33:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2024-09-13 06:33:06,259 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-13 06:33:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:06,666 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2024-09-13 06:33:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 06:33:06,667 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 256 [2024-09-13 06:33:06,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:06,668 INFO L225 Difference]: With dead ends: 46 [2024-09-13 06:33:06,668 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 06:33:06,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 06:33:06,669 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:06,669 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 202 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:33:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 06:33:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-09-13 06:33:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-13 06:33:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-09-13 06:33:06,676 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 256 [2024-09-13 06:33:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:06,679 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-09-13 06:33:06,679 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 8 states have call successors, (15), 3 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-13 06:33:06,679 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-09-13 06:33:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-09-13 06:33:06,682 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:06,682 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:33:06,703 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 06:33:06,886 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 06:33:06,887 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 06:33:06,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1043831351, now seen corresponding path program 2 times [2024-09-13 06:33:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:06,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84427551] [2024-09-13 06:33:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:06,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:33:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:07,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:08,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:33:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 06:33:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 4165 trivial. 0 not checked. [2024-09-13 06:33:09,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84427551] [2024-09-13 06:33:09,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84427551] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:33:09,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069634583] [2024-09-13 06:33:09,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:33:09,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:33:09,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:33:09,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:33:09,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 06:33:09,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:33:09,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:33:09,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-13 06:33:09,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:33:09,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-09-13 06:33:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1186 proven. 18 refuted. 0 times theorem prover too weak. 2999 trivial. 0 not checked. [2024-09-13 06:33:09,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:33:10,946 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 06:33:10,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 06:33:11,331 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 06:33:11,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 06:33:11,598 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 06:33:11,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 06:33:11,798 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 06:33:11,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 06:33:11,965 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-09-13 06:33:11,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-09-13 06:33:12,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069634583] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:33:12,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 06:33:12,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2024-09-13 06:33:12,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037754969] [2024-09-13 06:33:12,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 06:33:12,239 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 06:33:12,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:12,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 06:33:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-09-13 06:33:12,240 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-13 06:33:16,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 06:33:16,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:16,479 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-09-13 06:33:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 06:33:16,479 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 256 [2024-09-13 06:33:16,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:16,480 INFO L225 Difference]: With dead ends: 44 [2024-09-13 06:33:16,480 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 06:33:16,481 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2024-09-13 06:33:16,481 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:16,481 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 28 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 188 Invalid, 3 Unknown, 0 Unchecked, 4.1s Time] [2024-09-13 06:33:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 06:33:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 06:33:16,482 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) [2024-09-13 06:33:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 06:33:16,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 256 [2024-09-13 06:33:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:16,482 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 06:33:16,482 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-13 06:33:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 06:33:16,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 06:33:16,484 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 06:33:16,504 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 06:33:16,685 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-13 06:33:16,688 INFO L408 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1] [2024-09-13 06:33:16,689 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 06:33:16,692 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:33:16 BoogieIcfgContainer [2024-09-13 06:33:16,692 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 06:33:16,692 INFO L158 Benchmark]: Toolchain (without parser) took 55055.30ms. Allocated memory was 159.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 101.3MB in the beginning and 968.2MB in the end (delta: -866.8MB). Peak memory consumption was 279.5MB. Max. memory is 16.1GB. [2024-09-13 06:33:16,692 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:33:16,692 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 159.4MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:33:16,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.87ms. Allocated memory is still 159.4MB. Free memory was 101.3MB in the beginning and 89.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 06:33:16,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.57ms. Allocated memory is still 159.4MB. Free memory was 89.6MB in the beginning and 88.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:33:16,693 INFO L158 Benchmark]: Boogie Preprocessor took 47.82ms. Allocated memory is still 159.4MB. Free memory was 88.3MB in the beginning and 86.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:33:16,693 INFO L158 Benchmark]: RCFGBuilder took 311.88ms. Allocated memory is still 159.4MB. Free memory was 86.2MB in the beginning and 73.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 06:33:16,693 INFO L158 Benchmark]: TraceAbstraction took 54436.36ms. Allocated memory was 159.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 72.4MB in the beginning and 968.2MB in the end (delta: -895.8MB). Peak memory consumption was 250.2MB. Max. memory is 16.1GB. [2024-09-13 06:33:16,695 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 159.4MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.87ms. Allocated memory is still 159.4MB. Free memory was 101.3MB in the beginning and 89.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.57ms. Allocated memory is still 159.4MB. Free memory was 89.6MB in the beginning and 88.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.82ms. Allocated memory is still 159.4MB. Free memory was 88.3MB in the beginning and 86.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.88ms. Allocated memory is still 159.4MB. Free memory was 86.2MB in the beginning and 73.3MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 54436.36ms. Allocated memory was 159.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 72.4MB in the beginning and 968.2MB in the end (delta: -895.8MB). Peak memory consumption was 250.2MB. Max. memory is 16.1GB. * 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: 69]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.4s, OverallIterations: 12, TraceHistogramMax: 42, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 288 mSDsluCounter, 1329 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1186 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2382 IncrementalHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 143 mSDtfsCounter, 2382 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3070 GetRequests, 2646 SyntacticMatches, 22 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5592 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=9, InterpolantAutomatonStates: 154, 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, 12 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 42.3s InterpolantComputationTime, 2821 NumberOfCodeBlocks, 2729 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3674 ConstructedInterpolants, 34 QuantifiedInterpolants, 13922 SizeOfPredicates, 132 NumberOfNonLiveVariables, 5536 ConjunctsInSsa, 687 ConjunctsInUnsatCore, 30 InterpolantComputations, 2 PerfectInterpolantSequences, 36871/38647 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 06:33:16,730 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE