./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/lcm2_unwindbound1.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 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/nla-digbench-scaling/lcm2_unwindbound1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/lcm2_unwindbound1.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-1d5fa63-m [2024-09-13 10:20:36,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:20:36,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:20:36,877 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:20:36,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:20:36,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:20:36,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:20:36,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:20:36,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:20:36,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:20:36,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:20:36,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:20:36,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:20:36,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:20:36,917 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:20:36,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:20:36,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:20:36,918 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:20:36,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:20:36,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:20:36,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:20:36,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:20:36,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:20:36,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:20:36,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:20:36,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:20:36,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:20:36,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:20:36,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:20:36,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:20:36,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:20:36,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:20:36,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:20:36,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:20:36,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:20:36,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:20:36,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:20:36,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:20:36,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:20:36,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:20:36,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:20:36,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:20:36,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:20:37,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:20:37,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:20:37,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:20:37,200 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:20:37,201 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:20:37,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/lcm2_unwindbound1.yml/witness-2.1.yml [2024-09-13 10:20:37,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:20:37,255 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:20:37,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c [2024-09-13 10:20:38,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:20:38,823 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:20:38,824 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/lcm2_unwindbound1.c [2024-09-13 10:20:38,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d2e034c1f/5c3954182c6a4764a76641609bf48808/FLAG09800c5af [2024-09-13 10:20:38,842 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d2e034c1f/5c3954182c6a4764a76641609bf48808 [2024-09-13 10:20:38,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:20:38,844 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:20:38,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:20:38,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:20:38,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:20:38,850 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 10:20:37" (1/2) ... [2024-09-13 10:20:38,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6968a36d and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:38, skipping insertion in model container [2024-09-13 10:20:38,851 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 10:20:37" (1/2) ... [2024-09-13 10:20:38,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70d027b6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:20:38, skipping insertion in model container [2024-09-13 10:20:38,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:20:38" (2/2) ... [2024-09-13 10:20:38,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6968a36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:38, skipping insertion in model container [2024-09-13 10:20:38,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:20:38" (2/2) ... [2024-09-13 10:20:38,859 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:20:38,859 INFO L1541 ArrayList]: Loop invariant at [L36-L49] ((((((unsigned long long) b * a) % 2147483648) * 2) == ((((unsigned long long) y * v) + ((unsigned long long) x * u)) % 4294967296)) && (\old(counter) == 0)) [2024-09-13 10:20:38,859 INFO L1541 ArrayList]: Function contract at [L20]: requires (counter == 0), ensures (\old(counter) == 0) [2024-09-13 10:20:38,859 INFO L1541 ArrayList]: Function contract at [L8]: requires (counter == 0), ensures (counter == 0) [2024-09-13 10:20:38,859 INFO L1541 ArrayList]: Function contract at [L11]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 10:20:38,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:20:39,044 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/nla-digbench-scaling/lcm2_unwindbound1.c[537,550] [2024-09-13 10:20:39,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:20:39,076 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-13 10:20:39,119 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/nla-digbench-scaling/lcm2_unwindbound1.c[537,550] Start Parsing Global Start Parsing Global Start Parsing Local [2024-09-13 10:20:39,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:20:39,153 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:20:39,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39 WrapperNode [2024-09-13 10:20:39,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:20:39,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:20:39,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:20:39,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:20:39,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,195 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-09-13 10:20:39,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:20:39,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:20:39,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:20:39,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:20:39,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,207 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,215 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:20:39,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:20:39,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:20:39,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:20:39,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:20:39,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (1/1) ... [2024-09-13 10:20:39,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:20:39,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:39,263 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 10:20:39,264 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 10:20:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:20:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 10:20:39,301 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 10:20:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:20:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:20:39,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:20:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 10:20:39,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 10:20:39,381 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:20:39,385 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:20:39,598 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 10:20:39,603 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 10:20:39,625 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-09-13 10:20:39,625 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:20:39,653 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:20:39,654 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 10:20:39,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:20:39 BoogieIcfgContainer [2024-09-13 10:20:39,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:20:39,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:20:39,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:20:39,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:20:39,662 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 10:20:37" (1/4) ... [2024-09-13 10:20:39,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7446c5 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:20:39, skipping insertion in model container [2024-09-13 10:20:39,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:20:38" (2/4) ... [2024-09-13 10:20:39,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7446c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:20:39, skipping insertion in model container [2024-09-13 10:20:39,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:20:39" (3/4) ... [2024-09-13 10:20:39,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7446c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:20:39, skipping insertion in model container [2024-09-13 10:20:39,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:20:39" (4/4) ... [2024-09-13 10:20:39,666 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_unwindbound1.c [2024-09-13 10:20:39,680 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:20:39,680 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-09-13 10:20:39,712 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:20:39,718 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;@7c98b8e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:20:39,718 INFO L337 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-09-13 10:20:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 29 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:20:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-13 10:20:39,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:39,726 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-13 10:20:39,727 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:39,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:39,731 INFO L85 PathProgramCache]: Analyzing trace with hash 3568, now seen corresponding path program 1 times [2024-09-13 10:20:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:39,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648219369] [2024-09-13 10:20:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:39,891 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 10:20:39,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648219369] [2024-09-13 10:20:39,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648219369] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:39,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:39,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-13 10:20:39,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239466302] [2024-09-13 10:20:39,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:39,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:20:39,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:39,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:20:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:39,924 INFO L87 Difference]: Start difference. First operand has 38 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 29 states have internal predecessors, (35), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:39,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:39,973 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2024-09-13 10:20:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:20:39,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-09-13 10:20:39,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:39,981 INFO L225 Difference]: With dead ends: 35 [2024-09-13 10:20:39,982 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 10:20:39,984 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 10:20:39,988 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:39,989 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:40,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 10:20:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-09-13 10:20:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:20:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-09-13 10:20:40,024 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 2 [2024-09-13 10:20:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:40,024 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-09-13 10:20:40,025 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:20:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-09-13 10:20:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 10:20:40,027 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:40,028 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:40,028 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:20:40,028 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:40,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:40,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1529006107, now seen corresponding path program 1 times [2024-09-13 10:20:40,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:40,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650195392] [2024-09-13 10:20:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:40,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:20:40,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185367368] [2024-09-13 10:20:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:40,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:40,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:40,146 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 10:20:40,148 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 10:20:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:40,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-13 10:20:40,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:20:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 10:20:40,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:20:40,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:40,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650195392] [2024-09-13 10:20:40,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 10:20:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185367368] [2024-09-13 10:20:40,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185367368] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:40,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:40,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-13 10:20:40,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568490648] [2024-09-13 10:20:40,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:40,982 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 10:20:40,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:40,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 10:20:40,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:20:40,985 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 10 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 10:20:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:41,363 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2024-09-13 10:20:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 10:20:41,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2024-09-13 10:20:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:41,365 INFO L225 Difference]: With dead ends: 39 [2024-09-13 10:20:41,366 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 10:20:41,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-09-13 10:20:41,368 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:41,368 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 76 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 10:20:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 10:20:41,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-09-13 10:20:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:20:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-09-13 10:20:41,379 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 24 [2024-09-13 10:20:41,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:41,381 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-09-13 10:20:41,381 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 10:20:41,381 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-09-13 10:20:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-13 10:20:41,383 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:41,383 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:41,391 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:20:41,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:41,588 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:41,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash -995696217, now seen corresponding path program 1 times [2024-09-13 10:20:41,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:41,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046856999] [2024-09-13 10:20:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:41,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:20:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:41,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:20:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:41,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:20:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:41,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 10:20:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 10:20:41,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046856999] [2024-09-13 10:20:41,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046856999] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:41,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:41,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:20:41,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790983228] [2024-09-13 10:20:41,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:41,915 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:20:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:41,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:20:41,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:20:41,916 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 10:20:41,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:41,938 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-09-13 10:20:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:20:41,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-13 10:20:41,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:41,941 INFO L225 Difference]: With dead ends: 34 [2024-09-13 10:20:41,941 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 10:20:41,941 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:20:41,943 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:41,944 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 10:20:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-13 10:20:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 25 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:20:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-09-13 10:20:41,951 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 30 [2024-09-13 10:20:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:41,951 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-09-13 10:20:41,952 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 10:20:41,952 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-09-13 10:20:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-13 10:20:41,953 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:41,953 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:41,953 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 10:20:41,953 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:41,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash -993908757, now seen corresponding path program 1 times [2024-09-13 10:20:41,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:41,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371475180] [2024-09-13 10:20:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:41,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:20:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:20:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:20:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 10:20:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 10:20:42,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:42,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371475180] [2024-09-13 10:20:42,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371475180] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:42,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:42,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 10:20:42,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726105341] [2024-09-13 10:20:42,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:42,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:20:42,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:42,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:20:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:42,046 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 10:20:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:42,065 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-09-13 10:20:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:20:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-13 10:20:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:42,066 INFO L225 Difference]: With dead ends: 33 [2024-09-13 10:20:42,067 INFO L226 Difference]: Without dead ends: 33 [2024-09-13 10:20:42,067 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 10:20:42,068 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:42,068 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-13 10:20:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-13 10:20:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 states have internal predecessors, (27), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:20:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-09-13 10:20:42,073 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 30 [2024-09-13 10:20:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:42,073 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-09-13 10:20:42,074 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 10:20:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-09-13 10:20:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-13 10:20:42,075 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:42,075 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:42,075 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 10:20:42,075 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:42,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:42,076 INFO L85 PathProgramCache]: Analyzing trace with hash -993908918, now seen corresponding path program 1 times [2024-09-13 10:20:42,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:42,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250057804] [2024-09-13 10:20:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:42,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:20:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:20:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:20:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 10:20:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:20:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 10:20:42,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:20:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250057804] [2024-09-13 10:20:42,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250057804] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:20:42,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:20:42,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:20:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669333673] [2024-09-13 10:20:42,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:20:42,195 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 10:20:42,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:20:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 10:20:42,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 10:20:42,199 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 10:20:42,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:20:42,211 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2024-09-13 10:20:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 10:20:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-13 10:20:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:20:42,213 INFO L225 Difference]: With dead ends: 31 [2024-09-13 10:20:42,213 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 10:20:42,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 10:20:42,214 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:20:42,214 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:20:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 10:20:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-13 10:20:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:20:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-09-13 10:20:42,223 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 30 [2024-09-13 10:20:42,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:20:42,224 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-09-13 10:20:42,224 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 10:20:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-09-13 10:20:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-13 10:20:42,226 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:20:42,226 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:20:42,226 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 10:20:42,226 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 9 more)] === [2024-09-13 10:20:42,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:20:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash -966954651, now seen corresponding path program 1 times [2024-09-13 10:20:42,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:20:42,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203141303] [2024-09-13 10:20:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:20:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 10:20:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072136372] [2024-09-13 10:20:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:20:42,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:20:42,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:20:42,278 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 10:20:42,282 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process