./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_ps2-ll.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_nla-digbench/recursified_ps2-ll.c ../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_ps2-ll.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 06:32:54,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:32:54,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:32:54,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:32:54,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:32:54,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:32:54,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:32:54,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:32:54,782 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:32:54,786 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:32:54,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:32:54,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:32:54,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:32:54,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:32:54,787 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:32:54,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:32:54,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:32:54,788 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:32:54,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:32:54,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:32:54,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:32:54,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:32:54,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:32:54,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:32:54,791 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:32:54,792 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:32:54,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:32:54,793 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:32:54,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:32:54,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:32:54,793 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:32:54,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:32:54,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:32:54,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:32:54,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:32:54,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:32:54,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:32:54,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:32:54,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:32:54,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:32:54,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:32:54,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:32:54,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:32:55,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:32:55,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:32:55,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:32:55,063 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:32:55,063 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:32:55,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c [2024-09-13 06:32:56,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:32:56,676 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:32:56,676 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps2-ll.c [2024-09-13 06:32:56,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7279d0267/7400f1a76dd34d2f853917114ba1593f/FLAG853682e9f [2024-09-13 06:32:57,084 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7279d0267/7400f1a76dd34d2f853917114ba1593f [2024-09-13 06:32:57,086 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:32:57,087 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:32:57,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/recursified_ps2-ll.yml/witness-2.1.yml [2024-09-13 06:32:57,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:32:57,146 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:32:57,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:32:57,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:32:57,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:32:57,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:32:57" (1/2) ... [2024-09-13 06:32:57,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acea165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:32:57, skipping insertion in model container [2024-09-13 06:32:57,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:32:57" (1/2) ... [2024-09-13 06:32:57,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56cf1d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:32:57, skipping insertion in model container [2024-09-13 06:32:57,158 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 06:32:57" (2/2) ... [2024-09-13 06:32:57,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acea165 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:57, skipping insertion in model container [2024-09-13 06:32:57,159 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 06:32:57" (2/2) ... [2024-09-13 06:32:57,165 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:32:57,170 INFO L1541 ArrayList]: Function contract at [L31]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 06:32:57,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:32:57,360 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_nla-digbench/recursified_ps2-ll.c[983,996] [2024-09-13 06:32:57,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:32:57,389 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 06:32:57,433 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_nla-digbench/recursified_ps2-ll.c[983,996] [2024-09-13 06:32:57,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:32:57,465 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:32:57,466 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:32:57 WrapperNode [2024-09-13 06:32:57,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:32:57,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:32:57,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:32:57,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:32:57,474 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,482 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,500 INFO L138 Inliner]: procedures = 16, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2024-09-13 06:32:57,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:32:57,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:32:57,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:32:57,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:32:57,513 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,513 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,515 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,536 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 06:32:57,536 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,537 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,540 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,545 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,547 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,551 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:32:57,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:32:57,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:32:57,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:32:57,558 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 06:32:57" (1/1) ... [2024-09-13 06:32:57,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:32:57,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:57,588 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 06:32:57,592 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 06:32:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:32:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 06:32:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-13 06:32:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-13 06:32:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:32:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:32:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-13 06:32:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-09-13 06:32:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-09-13 06:32:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 06:32:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 06:32:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 06:32:57,701 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:32:57,704 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:32:57,861 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 06:32:57,888 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-09-13 06:32:57,888 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:32:57,927 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:32:57,927 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 06:32:57,927 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:32:57 BoogieIcfgContainer [2024-09-13 06:32:57,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:32:57,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:32:57,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:32:57,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:32:57,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:32:57" (1/4) ... [2024-09-13 06:32:57,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472f8010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:32:57, skipping insertion in model container [2024-09-13 06:32:57,935 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 06:32:57" (2/4) ... [2024-09-13 06:32:57,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472f8010 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:32:57, skipping insertion in model container [2024-09-13 06:32:57,935 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 06:32:57" (3/4) ... [2024-09-13 06:32:57,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472f8010 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:32:57, skipping insertion in model container [2024-09-13 06:32:57,935 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 06:32:57" (4/4) ... [2024-09-13 06:32:57,937 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps2-ll.c [2024-09-13 06:32:57,956 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:32:57,957 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-13 06:32:58,002 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:32:58,008 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;@3784337a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:32:58,009 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-13 06:32:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 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 06:32:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 06:32:58,018 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:32:58,019 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 06:32:58,020 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:32:58,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:32:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash 74160820, now seen corresponding path program 1 times [2024-09-13 06:32:58,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:32:58,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809138684] [2024-09-13 06:32:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:58,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:32:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:32:58,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838041312] [2024-09-13 06:32:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:32:58,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:32:58,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:32:58,227 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 06:32:58,228 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 06:32:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:32:58,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-13 06:32:58,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:32:58,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:32:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:32:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:32:58,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:32:58,689 INFO L349 Elim1Store]: treesize reduction 188, result has 24.5 percent of original size [2024-09-13 06:32:58,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 130 treesize of output 333 [2024-09-13 06:32:58,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 15 [2024-09-13 06:32:58,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 15 [2024-09-13 06:32:58,870 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:32:58,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 110 treesize of output 100 [2024-09-13 06:32:59,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-09-13 06:32:59,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-09-13 06:32:59,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-09-13 06:32:59,380 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,405 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,409 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,412 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,420 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 237 [2024-09-13 06:32:59,701 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,726 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,730 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,730 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,739 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 279 [2024-09-13 06:32:59,903 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:32:59,947 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2024-09-13 06:32:59,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 271 treesize of output 250 [2024-09-13 06:33:00,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-09-13 06:33:00,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:00,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:00,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:00,754 INFO L349 Elim1Store]: treesize reduction 191, result has 20.7 percent of original size [2024-09-13 06:33:00,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 343 treesize of output 425 [2024-09-13 06:33:01,348 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-09-13 06:33:01,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 11 [2024-09-13 06:33:01,522 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-09-13 06:33:01,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 11 [2024-09-13 06:33:02,176 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-09-13 06:33:02,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 11 [2024-09-13 06:33:04,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 272 treesize of output 300 [2024-09-13 06:33:04,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 106 [2024-09-13 06:33:04,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 269 treesize of output 297 [2024-09-13 06:33:04,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 38 [2024-09-13 06:33:04,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 196 [2024-09-13 06:33:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:04,844 INFO L349 Elim1Store]: treesize reduction 201, result has 12.2 percent of original size [2024-09-13 06:33:04,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 12933 treesize of output 12761 [2024-09-13 06:33:06,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 1014 treesize of output 1015 [2024-09-13 06:33:06,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,443 INFO L349 Elim1Store]: treesize reduction 149, result has 22.8 percent of original size [2024-09-13 06:33:06,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 3714 treesize of output 3394 [2024-09-13 06:33:06,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 134 [2024-09-13 06:33:06,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:06,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 491 treesize of output 496 [2024-09-13 06:33:09,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:11,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:33:11,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 1 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 170 case distinctions, treesize of input 23065 treesize of output 21825 [2024-09-13 06:33:12,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1232 treesize of output 1230 [2024-09-13 06:33:12,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1230 treesize of output 1228 [2024-09-13 06:33:12,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1228 treesize of output 1226 [2024-09-13 06:33:12,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1226 treesize of output 1224 [2024-09-13 06:33:12,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1224 treesize of output 1222 [2024-09-13 06:33:13,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1222 treesize of output 1220 [2024-09-13 06:33:13,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1220 treesize of output 1218 [2024-09-13 06:33:14,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:33:14,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 22 [2024-09-13 06:33:29,696 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 06:33:29,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:33:29,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809138684] [2024-09-13 06:33:29,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:33:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838041312] [2024-09-13 06:33:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838041312] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:33:29,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:33:29,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:33:29,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554482910] [2024-09-13 06:33:29,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:33:29,703 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:33:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:33:29,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:33:29,733 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 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, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:40,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 06:33:44,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 06:33:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:44,989 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-09-13 06:33:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 06:33:44,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 06:33:44,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:44,996 INFO L225 Difference]: With dead ends: 27 [2024-09-13 06:33:44,996 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 06:33:44,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2024-09-13 06:33:45,000 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:45,001 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2024-09-13 06:33:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 06:33:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-09-13 06:33:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2) internal successors, (18), 18 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:33:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-13 06:33:45,031 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2024-09-13 06:33:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:45,031 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-13 06:33:45,032 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-13 06:33:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:33:45,033 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:45,033 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:33:45,052 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 06:33:45,233 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-09-13 06:33:45,234 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:33:45,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1712682790, now seen corresponding path program 1 times [2024-09-13 06:33:45,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:45,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655997331] [2024-09-13 06:33:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:45,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:45,333 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 06:33:45,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655997331] [2024-09-13 06:33:45,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655997331] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:33:45,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:33:45,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 06:33:45,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658693566] [2024-09-13 06:33:45,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:33:45,335 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:33:45,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:45,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:33:45,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:33:45,336 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:45,353 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-09-13 06:33:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:33:45,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 06:33:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:45,355 INFO L225 Difference]: With dead ends: 23 [2024-09-13 06:33:45,355 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 06:33:45,355 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:33:45,356 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:45,356 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:33:45,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 06:33:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-13 06:33:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:33:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-13 06:33:45,361 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2024-09-13 06:33:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:45,362 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-13 06:33:45,362 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-13 06:33:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:33:45,362 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:45,362 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:33:45,362 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 06:33:45,363 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:33:45,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:45,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1712682629, now seen corresponding path program 1 times [2024-09-13 06:33:45,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:45,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658191053] [2024-09-13 06:33:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:45,508 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 06:33:45,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:33:45,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658191053] [2024-09-13 06:33:45,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658191053] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:33:45,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:33:45,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:33:45,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799433768] [2024-09-13 06:33:45,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:33:45,509 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 06:33:45,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:33:45,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 06:33:45,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:33:45,510 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:33:45,524 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-09-13 06:33:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 06:33:45,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 06:33:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:33:45,525 INFO L225 Difference]: With dead ends: 21 [2024-09-13 06:33:45,525 INFO L226 Difference]: Without dead ends: 21 [2024-09-13 06:33:45,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 06:33:45,526 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:33:45,526 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:33:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-13 06:33:45,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-13 06:33:45,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:33:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-13 06:33:45,530 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2024-09-13 06:33:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:33:45,530 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-13 06:33:45,531 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:33:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-13 06:33:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 06:33:45,531 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:33:45,531 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:33:45,532 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 06:33:45,532 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:33:45,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:33:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1570114581, now seen corresponding path program 1 times [2024-09-13 06:33:45,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:33:45,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238698320] [2024-09-13 06:33:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:33:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:33:45,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377104583] [2024-09-13 06:33:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:33:45,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:33:45,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:33:45,598 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 06:33:45,600 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 06:33:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:33:45,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-09-13 06:33:45,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:33:45,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:45,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:45,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:45,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:45,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:45,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:46,489 INFO L349 Elim1Store]: treesize reduction 384, result has 24.0 percent of original size [2024-09-13 06:33:46,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 11 new quantified variables, introduced 8 case distinctions, treesize of input 286 treesize of output 1051 [2024-09-13 06:33:46,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 29 [2024-09-13 06:33:46,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 29 [2024-09-13 06:33:46,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 29 [2024-09-13 06:33:46,894 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:33:46,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 76 treesize of output 70 [2024-09-13 06:33:47,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 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 97 treesize of output 148 [2024-09-13 06:33:47,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 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 97 treesize of output 148 [2024-09-13 06:33:47,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 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 97 treesize of output 148 [2024-09-13 06:33:50,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:50,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:50,800 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:50,823 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:50,987 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:51,018 INFO L224 Elim1Store]: Index analysis took 503 ms [2024-09-13 06:33:51,093 INFO L349 Elim1Store]: treesize reduction 73, result has 9.9 percent of original size [2024-09-13 06:33:51,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 876 treesize of output 1075 [2024-09-13 06:33:52,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:52,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:52,751 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,838 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,866 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,880 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,900 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,931 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,961 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,962 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,974 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:52,975 INFO L224 Elim1Store]: Index analysis took 227 ms [2024-09-13 06:33:52,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 590 treesize of output 787 [2024-09-13 06:33:53,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:53,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:53,353 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:53,432 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:53,446 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:53,448 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:53,482 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:53,514 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:53,525 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:53,525 INFO L224 Elim1Store]: Index analysis took 176 ms [2024-09-13 06:33:53,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 609 treesize of output 714 [2024-09-13 06:33:54,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:54,095 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,102 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,108 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,115 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,161 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,166 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,180 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,183 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,196 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,197 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,200 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,206 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,209 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,209 INFO L224 Elim1Store]: Index analysis took 124 ms [2024-09-13 06:33:54,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 254 [2024-09-13 06:33:54,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:54,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:33:54,411 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,505 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,543 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,560 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,586 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,599 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,599 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:33:54,599 INFO L224 Elim1Store]: Index analysis took 192 ms [2024-09-13 06:33:54,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 522 treesize of output 627 [2024-09-13 06:34:00,935 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:00,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:00,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:00,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:00,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:00,944 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:00,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 169 [2024-09-13 06:34:00,959 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:00,963 INFO L349 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2024-09-13 06:34:00,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 29 [2024-09-13 06:34:00,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-09-13 06:34:02,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 84 [2024-09-13 06:34:02,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:02,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 48 [2024-09-13 06:34:02,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:02,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:34:02,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:34:03,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:34:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238698320] [2024-09-13 06:34:03,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:34:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377104583] [2024-09-13 06:34:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377104583] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:34:03,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:34:03,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-09-13 06:34:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559294273] [2024-09-13 06:34:03,125 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 06:34:03,126 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 06:34:03,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:34:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 06:34:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=122, Unknown=2, NotChecked=0, Total=156 [2024-09-13 06:34:03,127 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:34:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:34:03,336 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-09-13 06:34:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 06:34:03,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-13 06:34:03,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:34:03,338 INFO L225 Difference]: With dead ends: 42 [2024-09-13 06:34:03,338 INFO L226 Difference]: Without dead ends: 42 [2024-09-13 06:34:03,338 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=183, Unknown=2, NotChecked=0, Total=240 [2024-09-13 06:34:03,339 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:34:03,339 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 57 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:34:03,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-13 06:34:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2024-09-13 06:34:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-13 06:34:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-13 06:34:03,346 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 15 [2024-09-13 06:34:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:34:03,347 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-13 06:34:03,347 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:34:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-13 06:34:03,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 06:34:03,347 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:34:03,347 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:34:03,364 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 06:34:03,548 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 06:34:03,548 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:34:03,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:34:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1571605412, now seen corresponding path program 1 times [2024-09-13 06:34:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:34:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604073393] [2024-09-13 06:34:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:34:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:34:03,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032186827] [2024-09-13 06:34:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:03,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:34:03,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:34:03,590 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 06:34:03,592 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 06:34:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:34:03,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 06:34:03,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:34:03,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:03,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:03,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:03,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:03,877 INFO L349 Elim1Store]: treesize reduction 188, result has 24.5 percent of original size [2024-09-13 06:34:03,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 130 treesize of output 333 [2024-09-13 06:34:03,919 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:34:03,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 77 treesize of output 73 [2024-09-13 06:34:03,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 15 [2024-09-13 06:34:03,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 15 [2024-09-13 06:34:04,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-09-13 06:34:04,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-09-13 06:34:04,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 50 [2024-09-13 06:34:05,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:05,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:05,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:05,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:05,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:05,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:05,044 INFO L349 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2024-09-13 06:34:05,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 623 treesize of output 570 [2024-09-13 06:34:08,145 INFO L349 Elim1Store]: treesize reduction 8, result has 98.7 percent of original size [2024-09-13 06:34:08,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 5780 treesize of output 5600 [2024-09-13 06:34:08,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 430 treesize of output 428 [2024-09-13 06:34:08,277 INFO L349 Elim1Store]: treesize reduction 11, result has 50.0 percent of original size [2024-09-13 06:34:08,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 428 treesize of output 435 [2024-09-13 06:34:08,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-09-13 06:34:08,469 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-09-13 06:34:08,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 9 [2024-09-13 06:34:11,286 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 06:34:11,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:34:11,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:34:11,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604073393] [2024-09-13 06:34:11,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:34:11,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032186827] [2024-09-13 06:34:11,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032186827] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:34:11,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:34:11,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:34:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697237606] [2024-09-13 06:34:11,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:34:11,288 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:34:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:34:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:34:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:34:11,288 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:34:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:34:11,492 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-09-13 06:34:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:34:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-13 06:34:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:34:11,493 INFO L225 Difference]: With dead ends: 43 [2024-09-13 06:34:11,493 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 06:34:11,493 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:34:11,494 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:34:11,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:34:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 06:34:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-13 06:34:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 06:34:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-13 06:34:11,501 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 15 [2024-09-13 06:34:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:34:11,502 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-13 06:34:11,502 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:34:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-13 06:34:11,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-13 06:34:11,503 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:34:11,503 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-09-13 06:34:11,517 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 06:34:11,704 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 06:34:11,704 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:34:11,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:34:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash -634424222, now seen corresponding path program 2 times [2024-09-13 06:34:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:34:11,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304606312] [2024-09-13 06:34:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:34:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:34:11,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235616985] [2024-09-13 06:34:11,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:34:11,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:34:11,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:34:11,750 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 06:34:11,754 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 06:34:11,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:34:11,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:34:11,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-13 06:34:11,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:34:11,907 INFO L349 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2024-09-13 06:34:11,908 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 34 [2024-09-13 06:34:11,944 INFO L349 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2024-09-13 06:34:11,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 46 [2024-09-13 06:34:11,997 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:34:11,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 treesize of output 19 [2024-09-13 06:34:12,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 38 treesize of output 36 [2024-09-13 06:34:12,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2024-09-13 06:34:12,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 58 [2024-09-13 06:34:12,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 23 [2024-09-13 06:34:12,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2024-09-13 06:34:12,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-09-13 06:34:12,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 60 [2024-09-13 06:34:12,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,090 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:34:12,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2024-09-13 06:34:12,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2024-09-13 06:34:12,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 136 treesize of output 129 [2024-09-13 06:34:12,120 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-09-13 06:34:12,163 INFO L349 Elim1Store]: treesize reduction 53, result has 41.1 percent of original size [2024-09-13 06:34:12,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 63 [2024-09-13 06:34:12,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-09-13 06:34:12,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 19 [2024-09-13 06:34:12,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2024-09-13 06:34:12,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:12,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:12,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:12,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2024-09-13 06:34:12,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:12,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:34:12,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:34:12,797 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_235 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| c_func_to_recursive_line_26_to_34_0_~c.base v_ArrVal_235))) (let ((.cse6 (select .cse5 c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse3 (select .cse6 c_func_to_recursive_line_26_to_34_0_~y.offset))) (let ((.cse1 (store .cse5 c_func_to_recursive_line_26_to_34_0_~y.base (store .cse6 c_func_to_recursive_line_26_to_34_0_~y.offset (+ .cse3 1))))) (let ((.cse2 (select .cse1 c_func_to_recursive_line_26_to_34_0_~x.base))) (let ((.cse4 (select .cse2 c_func_to_recursive_line_26_to_34_0_~x.offset))) (= (let ((.cse0 (select (select (store .cse1 c_func_to_recursive_line_26_to_34_0_~x.base (store .cse2 c_func_to_recursive_line_26_to_34_0_~x.offset (+ .cse3 .cse4 1))) c_func_to_recursive_line_26_to_34_0_~y.base) c_func_to_recursive_line_26_to_34_0_~y.offset))) (+ .cse0 (* .cse0 .cse0))) (+ (* .cse3 2) 2 (* .cse4 2)))))))))) is different from false [2024-09-13 06:34:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:34:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304606312] [2024-09-13 06:34:12,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:34:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235616985] [2024-09-13 06:34:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235616985] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:34:12,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:34:12,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-13 06:34:12,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969391705] [2024-09-13 06:34:12,813 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 06:34:12,813 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 06:34:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:34:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 06:34:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=172, Unknown=1, NotChecked=26, Total=240 [2024-09-13 06:34:12,814 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:34:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:34:13,108 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2024-09-13 06:34:13,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 06:34:13,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-09-13 06:34:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:34:13,111 INFO L225 Difference]: With dead ends: 56 [2024-09-13 06:34:13,112 INFO L226 Difference]: Without dead ends: 56 [2024-09-13 06:34:13,112 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=275, Unknown=1, NotChecked=34, Total=380 [2024-09-13 06:34:13,113 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:34:13,113 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 81 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:34:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-13 06:34:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2024-09-13 06:34:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 8 states have call successors, (8), 7 states have call predecessors, (8), 9 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-13 06:34:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2024-09-13 06:34:13,119 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 25 [2024-09-13 06:34:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:34:13,119 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2024-09-13 06:34:13,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:34:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2024-09-13 06:34:13,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 06:34:13,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:34:13,120 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:34:13,134 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 06:34:13,320 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 06:34:13,321 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:34:13,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:34:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1222779608, now seen corresponding path program 1 times [2024-09-13 06:34:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:34:13,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584324252] [2024-09-13 06:34:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:34:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:34:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670530851] [2024-09-13 06:34:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:13,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:34:13,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:34:13,376 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 06:34:13,378 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 06:34:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:34:13,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-13 06:34:13,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:34:13,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 39 treesize of output 37 [2024-09-13 06:34:13,594 INFO L349 Elim1Store]: treesize reduction 88, result has 39.3 percent of original size [2024-09-13 06:34:13,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 105 [2024-09-13 06:34:13,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-09-13 06:34:13,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2024-09-13 06:34:13,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2024-09-13 06:34:13,736 INFO L349 Elim1Store]: treesize reduction 51, result has 20.3 percent of original size [2024-09-13 06:34:13,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 33 [2024-09-13 06:34:13,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 11 [2024-09-13 06:34:13,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2024-09-13 06:34:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:34:13,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:34:14,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:34:14,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584324252] [2024-09-13 06:34:14,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:34:14,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670530851] [2024-09-13 06:34:14,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670530851] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:34:14,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:34:14,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-13 06:34:14,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877843817] [2024-09-13 06:34:14,986 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 06:34:14,986 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 06:34:14,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:34:14,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 06:34:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-09-13 06:34:14,987 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 06:34:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:34:15,283 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2024-09-13 06:34:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 06:34:15,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-09-13 06:34:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:34:15,284 INFO L225 Difference]: With dead ends: 52 [2024-09-13 06:34:15,284 INFO L226 Difference]: Without dead ends: 38 [2024-09-13 06:34:15,284 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-09-13 06:34:15,285 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:34:15,285 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 22 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:34:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-13 06:34:15,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-09-13 06:34:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.0) internal successors, (25), 25 states have internal predecessors, (25), 8 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 06:34:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-13 06:34:15,289 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 27 [2024-09-13 06:34:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:34:15,289 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-13 06:34:15,289 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 06:34:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-13 06:34:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-13 06:34:15,290 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:34:15,290 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2024-09-13 06:34:15,303 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 06:34:15,491 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 06:34:15,491 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:34:15,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:34:15,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1868827673, now seen corresponding path program 3 times [2024-09-13 06:34:15,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:34:15,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133593596] [2024-09-13 06:34:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:15,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:34:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:34:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036034740] [2024-09-13 06:34:15,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 06:34:15,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:34:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:34:15,549 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 06:34:15,551 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 06:34:15,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 06:34:15,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:34:15,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 153 conjuncts are in the unsatisfiable core [2024-09-13 06:34:15,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:34:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:15,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:15,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:15,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:16,004 INFO L349 Elim1Store]: treesize reduction 188, result has 24.5 percent of original size [2024-09-13 06:34:16,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 130 treesize of output 333 [2024-09-13 06:34:16,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 15 [2024-09-13 06:34:16,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 15 [2024-09-13 06:34:16,081 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:34:16,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 95 treesize of output 87 [2024-09-13 06:34:16,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 29 [2024-09-13 06:34:16,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 29 [2024-09-13 06:34:16,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 29 [2024-09-13 06:34:16,383 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,414 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,419 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,422 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,432 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 212 [2024-09-13 06:34:16,499 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,527 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,532 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,533 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,542 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:16,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 244 [2024-09-13 06:34:16,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:16,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:16,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:16,981 INFO L349 Elim1Store]: treesize reduction 122, result has 17.0 percent of original size [2024-09-13 06:34:16,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 2074 treesize of output 1974 [2024-09-13 06:34:17,028 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:17,034 INFO L349 Elim1Store]: treesize reduction 69, result has 1.4 percent of original size [2024-09-13 06:34:17,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 21 [2024-09-13 06:34:17,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 31 [2024-09-13 06:34:17,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:17,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:17,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:17,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:17,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:17,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:17,610 INFO L349 Elim1Store]: treesize reduction 112, result has 36.0 percent of original size [2024-09-13 06:34:17,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 131 [2024-09-13 06:34:17,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:17,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:17,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 54 treesize of output 50 [2024-09-13 06:34:17,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 54 treesize of output 50 [2024-09-13 06:34:17,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 83 [2024-09-13 06:34:17,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 113 [2024-09-13 06:34:17,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 171 [2024-09-13 06:34:18,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 119 [2024-09-13 06:34:18,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:18,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:18,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:18,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2024-09-13 06:34:18,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:18,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2024-09-13 06:34:18,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:18,674 INFO L349 Elim1Store]: treesize reduction 47, result has 28.8 percent of original size [2024-09-13 06:34:18,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 234 treesize of output 98 [2024-09-13 06:34:18,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 06:34:18,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2024-09-13 06:34:18,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2024-09-13 06:34:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:34:18,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:34:19,199 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_376 (Array Int Int))) (let ((.cse13 (store |c_#memory_int| c_func_to_recursive_line_26_to_34_0_~c.base v_ArrVal_376))) (let ((.cse14 (select .cse13 c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse12 (select .cse14 c_func_to_recursive_line_26_to_34_0_~y.offset))) (let ((.cse8 (store .cse14 c_func_to_recursive_line_26_to_34_0_~y.offset (+ .cse12 1)))) (let ((.cse10 (store .cse13 c_func_to_recursive_line_26_to_34_0_~y.base .cse8))) (let ((.cse6 (let ((.cse11 (select .cse10 c_func_to_recursive_line_26_to_34_0_~x.base))) (store .cse11 c_func_to_recursive_line_26_to_34_0_~x.offset (+ (select .cse11 c_func_to_recursive_line_26_to_34_0_~x.offset) .cse12 1))))) (let ((.cse1 (let ((.cse9 (select (store .cse10 c_func_to_recursive_line_26_to_34_0_~x.base .cse6) c_func_to_recursive_line_26_to_34_0_~c.base))) (store .cse9 c_func_to_recursive_line_26_to_34_0_~c.offset (+ (select .cse9 c_func_to_recursive_line_26_to_34_0_~c.offset) 1))))) (let ((.cse7 (select (store (store (store |c_#memory_int| c_func_to_recursive_line_26_to_34_0_~y.base .cse8) c_func_to_recursive_line_26_to_34_0_~x.base .cse6) c_func_to_recursive_line_26_to_34_0_~c.base .cse1) c_func_to_recursive_line_26_to_34_0_~y.base))) (let ((.cse5 (select .cse7 c_func_to_recursive_line_26_to_34_0_~y.offset))) (let ((.cse2 (store .cse7 c_func_to_recursive_line_26_to_34_0_~y.offset (+ .cse5 1)))) (let ((.cse3 (select (store (store (store |c_#memory_int| c_func_to_recursive_line_26_to_34_0_~x.base .cse6) c_func_to_recursive_line_26_to_34_0_~c.base .cse1) c_func_to_recursive_line_26_to_34_0_~y.base .cse2) c_func_to_recursive_line_26_to_34_0_~x.base))) (let ((.cse4 (select .cse3 c_func_to_recursive_line_26_to_34_0_~x.offset))) (= (let ((.cse0 (select (select (store (store (store |c_#memory_int| c_func_to_recursive_line_26_to_34_0_~c.base .cse1) c_func_to_recursive_line_26_to_34_0_~y.base .cse2) c_func_to_recursive_line_26_to_34_0_~x.base (store .cse3 c_func_to_recursive_line_26_to_34_0_~x.offset (+ .cse4 .cse5 1))) c_func_to_recursive_line_26_to_34_0_~y.base) c_func_to_recursive_line_26_to_34_0_~y.offset))) (+ .cse0 (* .cse0 .cse0))) (+ (* 2 .cse5) 2 (* .cse4 2)))))))))))))))) is different from false [2024-09-13 06:34:19,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:34:19,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133593596] [2024-09-13 06:34:19,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 06:34:19,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036034740] [2024-09-13 06:34:19,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036034740] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:34:19,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:34:19,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-13 06:34:19,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318340687] [2024-09-13 06:34:19,272 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 06:34:19,272 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 06:34:19,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:34:19,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 06:34:19,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=389, Unknown=8, NotChecked=40, Total=506 [2024-09-13 06:34:19,273 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 06:34:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:34:19,959 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2024-09-13 06:34:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 06:34:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2024-09-13 06:34:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:34:19,960 INFO L225 Difference]: With dead ends: 48 [2024-09-13 06:34:19,960 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 06:34:19,961 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=585, Unknown=9, NotChecked=50, Total=756 [2024-09-13 06:34:19,961 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 06:34:19,961 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 371 Invalid, 6 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 06:34:19,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 06:34:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-09-13 06:34:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.0) internal successors, (32), 32 states have internal predecessors, (32), 10 states have call successors, (10), 9 states have call predecessors, (10), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 06:34:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2024-09-13 06:34:19,966 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 35 [2024-09-13 06:34:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:34:19,966 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2024-09-13 06:34:19,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 6 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 06:34:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2024-09-13 06:34:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-13 06:34:19,967 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:34:19,968 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2024-09-13 06:34:19,976 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 06:34:20,168 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 06:34:20,168 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION, func_to_recursive_line_26_to_34_0Err0REQUIRES_VIOLATIONPRE_CONDITION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-13 06:34:20,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:34:20,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1753459472, now seen corresponding path program 4 times [2024-09-13 06:34:20,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:34:20,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648015851] [2024-09-13 06:34:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:34:20,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:34:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 06:34:20,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25837038] [2024-09-13 06:34:20,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 06:34:20,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:34:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:34:20,236 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 06:34:20,238 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 06:34:20,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 06:34:20,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:34:20,946 WARN L260 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 175 conjuncts are in the unsatisfiable core [2024-09-13 06:34:20,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:34:21,723 INFO L349 Elim1Store]: treesize reduction 417, result has 37.5 percent of original size [2024-09-13 06:34:21,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 1962 treesize of output 910 [2024-09-13 06:34:38,344 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 06:34:46,543 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 06:34:52,137 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:52,143 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:52,162 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-09-13 06:34:52,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 606 treesize of output 576 [2024-09-13 06:34:52,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 10 [2024-09-13 06:34:52,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:34:52,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36 treesize of output 40 [2024-09-13 06:34:52,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 16 [2024-09-13 06:34:52,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 10 [2024-09-13 06:34:52,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:34:52,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 363 treesize of output 355 [2024-09-13 06:34:52,608 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:52,615 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:52,632 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-09-13 06:34:52,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 350 [2024-09-13 06:34:52,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2024-09-13 06:34:52,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2024-09-13 06:34:52,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:34:52,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 60 [2024-09-13 06:34:52,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:34:52,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 104 treesize of output 94 [2024-09-13 06:34:52,949 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:34:52,964 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-09-13 06:34:52,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 283 treesize of output 247 [2024-09-13 06:35:09,206 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 06:35:17,245 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 06:35:25,477 WARN L293 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 06:35:25,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2024-09-13 06:35:25,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:35:25,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 236 treesize of output 218 [2024-09-13 06:35:31,568 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 06:35:38,538 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:35:38,544 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:35:38,559 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-09-13 06:35:38,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 637 treesize of output 615 [2024-09-13 06:35:38,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2024-09-13 06:35:38,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:35:38,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 30 [2024-09-13 06:35:38,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2024-09-13 06:35:38,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:35:38,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 48 treesize of output 48 [2024-09-13 06:35:38,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2024-09-13 06:35:38,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:35:38,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 113 treesize of output 111 [2024-09-13 06:35:38,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 54 treesize of output 48 [2024-09-13 06:35:38,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 19 [2024-09-13 06:35:38,743 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-13 06:35:38,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 102 treesize of output 88 [2024-09-13 06:35:46,769 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 06:35:46,853 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:35:46,863 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 06:35:46,888 INFO L349 Elim1Store]: treesize reduction 24, result has 25.0 percent of original size [2024-09-13 06:35:46,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 684 treesize of output 629 [2024-09-13 06:35:46,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-09-13 06:35:47,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:35:47,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29 treesize of output 33 [2024-09-13 06:35:47,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-09-13 06:35:47,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:35:47,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 30 treesize of output 34 [2024-09-13 06:35:47,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2024-09-13 06:35:47,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-09-13 06:35:47,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-13 06:35:47,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 126 treesize of output 122 [2024-09-13 06:35:59,450 WARN L293 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 265 DAG size of output: 248 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 06:37:01,157 WARN L293 SmtUtils]: Spent 15.59s on a formula simplification that was a NOOP. DAG size: 248 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 06:37:45,507 WARN L293 SmtUtils]: Spent 6.54s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 06:38:39,029 WARN L293 SmtUtils]: Spent 17.97s on a formula simplification that was a NOOP. DAG size: 257 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 06:38:43,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 16 [2024-09-13 06:39:11,555 WARN L293 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 06:39:27,370 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 06:40:03,695 WARN L293 SmtUtils]: Spent 6.76s on a formula simplification that was a NOOP. DAG size: 384 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15