./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/verifythis/duplets.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/verifythis/duplets.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:06:13,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:06:13,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:06:13,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:06:13,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:06:13,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:06:13,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:06:13,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:06:13,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:06:13,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:06:13,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:06:13,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:06:13,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:06:13,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:06:13,852 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:06:13,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:06:13,852 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:06:13,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:06:13,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:06:13,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:06:13,853 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:06:13,857 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:06:13,857 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:06:13,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:06:13,857 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:06:13,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:06:13,858 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:06:13,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:06:13,858 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:06:13,859 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:06:13,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:06:13,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:06:13,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:06:13,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:06:13,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:06:13,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:06:13,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:06:13,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:06:13,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:06:13,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:06:13,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:06:13,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:06:13,862 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/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 [2024-11-10 15:06:14,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:06:14,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:06:14,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:06:14,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:06:14,133 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:06:14,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/duplets.c [2024-11-10 15:06:15,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:06:15,743 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:06:15,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/duplets.c [2024-11-10 15:06:15,755 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980a4c64c/0bec3bdde1b54dc88ccc81382b785431/FLAGe8ba1c036 [2024-11-10 15:06:15,771 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980a4c64c/0bec3bdde1b54dc88ccc81382b785431 [2024-11-10 15:06:15,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:06:15,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:06:15,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:06:15,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:06:15,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:06:15,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:06:15" (1/1) ... [2024-11-10 15:06:15,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ad94fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:15, skipping insertion in model container [2024-11-10 15:06:15,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:06:15" (1/1) ... [2024-11-10 15:06:15,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:06:16,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:06:16,011 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:06:16,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:06:16,048 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:06:16,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16 WrapperNode [2024-11-10 15:06:16,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:06:16,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:06:16,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:06:16,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:06:16,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,089 INFO L138 Inliner]: procedures = 21, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 130 [2024-11-10 15:06:16,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:06:16,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:06:16,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:06:16,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:06:16,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,124 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 7, 5, 5]. 37 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 5 writes are split as follows [0, 3, 1, 1]. [2024-11-10 15:06:16,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,132 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:06:16,141 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:06:16,142 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:06:16,142 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:06:16,143 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (1/1) ... [2024-11-10 15:06:16,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:06:16,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:16,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 15:06:16,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 15:06:16,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:06:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-10 15:06:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-10 15:06:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:06:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:06:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 15:06:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 15:06:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:06:16,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:06:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:06:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 15:06:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 15:06:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 15:06:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:06:16,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:06:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:06:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 15:06:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 15:06:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 15:06:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-10 15:06:16,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-10 15:06:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:06:16,310 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:06:16,312 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:06:16,591 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L56: call ULTIMATE.dealloc(main_~#i~2#1.base, main_~#i~2#1.offset);havoc main_~#i~2#1.base, main_~#i~2#1.offset;call ULTIMATE.dealloc(main_~#j~2#1.base, main_~#j~2#1.offset);havoc main_~#j~2#1.base, main_~#j~2#1.offset; [2024-11-10 15:06:16,647 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-10 15:06:16,648 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:06:16,662 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:06:16,662 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:06:16,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:06:16 BoogieIcfgContainer [2024-11-10 15:06:16,663 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:06:16,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:06:16,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:06:16,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:06:16,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:06:15" (1/3) ... [2024-11-10 15:06:16,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6b617f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:06:16, skipping insertion in model container [2024-11-10 15:06:16,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:06:16" (2/3) ... [2024-11-10 15:06:16,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6b617f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:06:16, skipping insertion in model container [2024-11-10 15:06:16,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:06:16" (3/3) ... [2024-11-10 15:06:16,670 INFO L112 eAbstractionObserver]: Analyzing ICFG duplets.c [2024-11-10 15:06:16,684 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:06:16,684 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-11-10 15:06:16,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:06:16,741 INFO L333 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;@f3df9fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:06:16,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-10 15:06:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 57 states have (on average 1.8070175438596492) internal successors, (103), 94 states have internal predecessors, (103), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:16,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 15:06:16,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:16,757 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:16,758 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:16,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1879622871, now seen corresponding path program 1 times [2024-11-10 15:06:16,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480341894] [2024-11-10 15:06:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:16,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:16,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:16,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:16,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:17,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:17,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480341894] [2024-11-10 15:06:17,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480341894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:17,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:17,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:06:17,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386069810] [2024-11-10 15:06:17,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:17,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 15:06:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 15:06:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 15:06:17,067 INFO L87 Difference]: Start difference. First operand has 106 states, 57 states have (on average 1.8070175438596492) internal successors, (103), 94 states have internal predecessors, (103), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:17,091 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2024-11-10 15:06:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 15:06:17,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-10 15:06:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:17,104 INFO L225 Difference]: With dead ends: 105 [2024-11-10 15:06:17,105 INFO L226 Difference]: Without dead ends: 102 [2024-11-10 15:06:17,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 15:06:17,111 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:17,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:06:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-10 15:06:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-10 15:06:17,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 90 states have internal predecessors, (95), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2024-11-10 15:06:17,154 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 26 [2024-11-10 15:06:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:17,155 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2024-11-10 15:06:17,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2024-11-10 15:06:17,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 15:06:17,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:17,157 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:17,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:06:17,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:17,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1153528407, now seen corresponding path program 1 times [2024-11-10 15:06:17,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71971776] [2024-11-10 15:06:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:17,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:17,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:17,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:17,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:17,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:17,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71971776] [2024-11-10 15:06:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71971776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:17,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:17,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:06:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583999444] [2024-11-10 15:06:17,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:17,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:06:17,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:06:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:06:17,492 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:17,616 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2024-11-10 15:06:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:06:17,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-10 15:06:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:17,618 INFO L225 Difference]: With dead ends: 100 [2024-11-10 15:06:17,618 INFO L226 Difference]: Without dead ends: 100 [2024-11-10 15:06:17,619 INFO L431 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 [2024-11-10 15:06:17,620 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 1 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:17,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 233 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:06:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-10 15:06:17,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-10 15:06:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 88 states have internal predecessors, (93), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2024-11-10 15:06:17,635 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 26 [2024-11-10 15:06:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:17,636 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2024-11-10 15:06:17,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2024-11-10 15:06:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 15:06:17,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:17,638 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:17,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:06:17,639 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:17,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1153528408, now seen corresponding path program 1 times [2024-11-10 15:06:17,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:17,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460028479] [2024-11-10 15:06:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:17,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:18,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:18,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:18,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:18,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 15:06:18,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:18,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460028479] [2024-11-10 15:06:18,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460028479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:18,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657584528] [2024-11-10 15:06:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:18,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:18,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:18,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:18,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:06:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:18,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 15:06:18,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:18,412 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 [2024-11-10 15:06:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 15:06:18,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 15:06:19,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657584528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:06:19,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:06:19,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 7] total 19 [2024-11-10 15:06:19,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889058702] [2024-11-10 15:06:19,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:19,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 15:06:19,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 15:06:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:06:19,285 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 20 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 7 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-10 15:06:23,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:06:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:23,941 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-11-10 15:06:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:06:23,943 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 7 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) Word has length 26 [2024-11-10 15:06:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:23,945 INFO L225 Difference]: With dead ends: 137 [2024-11-10 15:06:23,946 INFO L226 Difference]: Without dead ends: 137 [2024-11-10 15:06:23,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-10 15:06:23,948 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 281 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:23,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 701 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 535 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-10 15:06:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-10 15:06:23,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 103. [2024-11-10 15:06:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 90 states have internal predecessors, (95), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2024-11-10 15:06:23,957 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 26 [2024-11-10 15:06:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:23,957 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2024-11-10 15:06:23,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 7 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-10 15:06:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2024-11-10 15:06:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 15:06:23,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:23,958 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:23,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 15:06:24,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:24,163 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:24,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1399642317, now seen corresponding path program 1 times [2024-11-10 15:06:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408646246] [2024-11-10 15:06:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:24,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:24,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:24,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:24,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:24,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 15:06:24,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:24,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408646246] [2024-11-10 15:06:24,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408646246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:24,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064374659] [2024-11-10 15:06:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:24,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:24,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:24,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:24,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:06:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:24,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 15:06:24,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:24,657 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 [2024-11-10 15:06:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 15:06:24,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-10 15:06:25,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064374659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:06:25,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:06:25,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 7] total 20 [2024-11-10 15:06:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727443590] [2024-11-10 15:06:25,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:25,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 15:06:25,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:25,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 15:06:25,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:06:25,297 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 21 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 7 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-10 15:06:29,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:06:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:30,004 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2024-11-10 15:06:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:06:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 7 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 27 [2024-11-10 15:06:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:30,008 INFO L225 Difference]: With dead ends: 136 [2024-11-10 15:06:30,009 INFO L226 Difference]: Without dead ends: 136 [2024-11-10 15:06:30,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:06:30,010 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 302 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:30,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 843 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 765 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-10 15:06:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-10 15:06:30,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 102. [2024-11-10 15:06:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 89 states have internal predecessors, (94), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2024-11-10 15:06:30,028 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 27 [2024-11-10 15:06:30,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:30,028 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2024-11-10 15:06:30,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.0) internal successors, (34), 19 states have internal predecessors, (34), 7 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-10 15:06:30,028 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2024-11-10 15:06:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-10 15:06:30,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:30,029 INFO L215 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] [2024-11-10 15:06:30,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 15:06:30,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-10 15:06:30,230 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:30,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash -265990847, now seen corresponding path program 1 times [2024-11-10 15:06:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944332278] [2024-11-10 15:06:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:30,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:30,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:30,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944332278] [2024-11-10 15:06:30,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944332278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:30,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:30,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 15:06:30,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755492258] [2024-11-10 15:06:30,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:30,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:06:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:30,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:06:30,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:06:30,407 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:30,576 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2024-11-10 15:06:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:06:30,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-10 15:06:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:30,578 INFO L225 Difference]: With dead ends: 97 [2024-11-10 15:06:30,579 INFO L226 Difference]: Without dead ends: 97 [2024-11-10 15:06:30,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:06:30,580 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 79 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:30,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 208 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:06:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-10 15:06:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-10 15:06:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.5614035087719298) internal successors, (89), 84 states have internal predecessors, (89), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2024-11-10 15:06:30,595 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 33 [2024-11-10 15:06:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:30,595 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2024-11-10 15:06:30,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2024-11-10 15:06:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-10 15:06:30,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:30,597 INFO L215 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] [2024-11-10 15:06:30,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:06:30,597 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:30,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:30,597 INFO L85 PathProgramCache]: Analyzing trace with hash -265990846, now seen corresponding path program 1 times [2024-11-10 15:06:30,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:30,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193818916] [2024-11-10 15:06:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:30,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:30,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193818916] [2024-11-10 15:06:30,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193818916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:30,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:30,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:06:30,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900784025] [2024-11-10 15:06:30,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:30,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:06:30,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:30,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:06:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:06:30,974 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:31,249 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2024-11-10 15:06:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:06:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-10 15:06:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:31,251 INFO L225 Difference]: With dead ends: 129 [2024-11-10 15:06:31,251 INFO L226 Difference]: Without dead ends: 129 [2024-11-10 15:06:31,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:06:31,254 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 81 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:31,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 223 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:06:31,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-10 15:06:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2024-11-10 15:06:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.6216216216216217) internal successors, (120), 101 states have internal predecessors, (120), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-10 15:06:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 144 transitions. [2024-11-10 15:06:31,273 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 144 transitions. Word has length 33 [2024-11-10 15:06:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:31,273 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 144 transitions. [2024-11-10 15:06:31,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 144 transitions. [2024-11-10 15:06:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 15:06:31,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:31,274 INFO L215 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] [2024-11-10 15:06:31,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 15:06:31,275 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:31,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:31,275 INFO L85 PathProgramCache]: Analyzing trace with hash 344218386, now seen corresponding path program 1 times [2024-11-10 15:06:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:31,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20369060] [2024-11-10 15:06:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:31,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:31,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:31,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:31,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:31,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:31,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20369060] [2024-11-10 15:06:31,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20369060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100483305] [2024-11-10 15:06:31,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:31,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:31,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:31,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:31,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:06:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:31,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-10 15:06:31,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:32,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:32,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:32,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 9 [2024-11-10 15:06:32,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:32,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-10 15:06:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:32,213 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:06:32,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100483305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:32,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:06:32,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 17 [2024-11-10 15:06:32,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844428029] [2024-11-10 15:06:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:32,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:06:32,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:06:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:06:32,215 INFO L87 Difference]: Start difference. First operand 117 states and 144 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:32,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:32,575 INFO L93 Difference]: Finished difference Result 131 states and 160 transitions. [2024-11-10 15:06:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:06:32,576 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-11-10 15:06:32,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:32,577 INFO L225 Difference]: With dead ends: 131 [2024-11-10 15:06:32,577 INFO L226 Difference]: Without dead ends: 131 [2024-11-10 15:06:32,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:06:32,578 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 103 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:32,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 355 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:06:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-10 15:06:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 107. [2024-11-10 15:06:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 94 states have internal predecessors, (104), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2024-11-10 15:06:32,590 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 34 [2024-11-10 15:06:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:32,590 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2024-11-10 15:06:32,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-10 15:06:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2024-11-10 15:06:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-10 15:06:32,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:32,591 INFO L215 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, 1, 1] [2024-11-10 15:06:32,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 15:06:32,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:32,795 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:32,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1951643685, now seen corresponding path program 1 times [2024-11-10 15:06:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886590712] [2024-11-10 15:06:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:32,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:32,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:32,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:32,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:32,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:32,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886590712] [2024-11-10 15:06:32,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886590712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:32,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090934297] [2024-11-10 15:06:32,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:32,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:32,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:32,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:32,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:06:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 15:06:33,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:33,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:33,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090934297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:06:33,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:06:33,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 15 [2024-11-10 15:06:33,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288073315] [2024-11-10 15:06:33,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:33,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 15:06:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:33,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 15:06:33,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:06:33,288 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 15 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 15 states have internal predecessors, (38), 8 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-10 15:06:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:33,534 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2024-11-10 15:06:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:06:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 15 states have internal predecessors, (38), 8 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 36 [2024-11-10 15:06:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:33,536 INFO L225 Difference]: With dead ends: 142 [2024-11-10 15:06:33,536 INFO L226 Difference]: Without dead ends: 142 [2024-11-10 15:06:33,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:06:33,537 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 270 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:33,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 903 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:06:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-10 15:06:33,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 107. [2024-11-10 15:06:33,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 94 states have internal predecessors, (103), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2024-11-10 15:06:33,542 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 36 [2024-11-10 15:06:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:33,542 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2024-11-10 15:06:33,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 15 states have internal predecessors, (38), 8 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-10 15:06:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2024-11-10 15:06:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-10 15:06:33,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:33,544 INFO L215 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, 1, 1] [2024-11-10 15:06:33,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 15:06:33,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:33,748 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:33,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:33,748 INFO L85 PathProgramCache]: Analyzing trace with hash 81387694, now seen corresponding path program 1 times [2024-11-10 15:06:33,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:33,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346808095] [2024-11-10 15:06:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:33,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:33,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:33,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346808095] [2024-11-10 15:06:33,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346808095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:33,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:33,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:06:33,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580346930] [2024-11-10 15:06:33,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:33,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:06:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:33,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:06:33,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:06:33,823 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:33,861 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2024-11-10 15:06:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:06:33,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2024-11-10 15:06:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:33,862 INFO L225 Difference]: With dead ends: 107 [2024-11-10 15:06:33,862 INFO L226 Difference]: Without dead ends: 107 [2024-11-10 15:06:33,862 INFO L431 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 [2024-11-10 15:06:33,863 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:33,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 154 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:06:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-10 15:06:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2024-11-10 15:06:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 68 states have (on average 1.5) internal successors, (102), 93 states have internal predecessors, (102), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2024-11-10 15:06:33,869 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 36 [2024-11-10 15:06:33,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:33,869 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2024-11-10 15:06:33,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2024-11-10 15:06:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-10 15:06:33,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:33,870 INFO L215 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, 1, 1] [2024-11-10 15:06:33,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 15:06:33,873 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:33,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash 81387695, now seen corresponding path program 1 times [2024-11-10 15:06:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:33,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590969306] [2024-11-10 15:06:33,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:33,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590969306] [2024-11-10 15:06:33,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590969306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:33,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:33,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:06:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014632360] [2024-11-10 15:06:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:33,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:06:33,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:34,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:06:34,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:06:34,000 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:34,046 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2024-11-10 15:06:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:06:34,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2024-11-10 15:06:34,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:34,048 INFO L225 Difference]: With dead ends: 106 [2024-11-10 15:06:34,048 INFO L226 Difference]: Without dead ends: 106 [2024-11-10 15:06:34,048 INFO L431 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 [2024-11-10 15:06:34,048 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 7 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:34,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 154 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:06:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-10 15:06:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-11-10 15:06:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.4852941176470589) internal successors, (101), 92 states have internal predecessors, (101), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2024-11-10 15:06:34,052 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 36 [2024-11-10 15:06:34,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:34,053 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2024-11-10 15:06:34,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2024-11-10 15:06:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-10 15:06:34,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:34,054 INFO L215 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, 1, 1, 1] [2024-11-10 15:06:34,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 15:06:34,054 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:34,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:34,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1771948741, now seen corresponding path program 1 times [2024-11-10 15:06:34,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:34,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342725915] [2024-11-10 15:06:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342725915] [2024-11-10 15:06:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342725915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:34,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:34,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:06:34,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750807017] [2024-11-10 15:06:34,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:34,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:06:34,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:06:34,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:06:34,114 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:34,152 INFO L93 Difference]: Finished difference Result 105 states and 119 transitions. [2024-11-10 15:06:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:06:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-11-10 15:06:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:34,153 INFO L225 Difference]: With dead ends: 105 [2024-11-10 15:06:34,153 INFO L226 Difference]: Without dead ends: 105 [2024-11-10 15:06:34,153 INFO L431 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 [2024-11-10 15:06:34,154 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:34,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 150 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:06:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-10 15:06:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2024-11-10 15:06:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 91 states have internal predecessors, (100), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2024-11-10 15:06:34,158 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 37 [2024-11-10 15:06:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:34,158 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2024-11-10 15:06:34,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2024-11-10 15:06:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-10 15:06:34,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:34,160 INFO L215 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, 1, 1, 1] [2024-11-10 15:06:34,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 15:06:34,161 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:34,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1771948740, now seen corresponding path program 1 times [2024-11-10 15:06:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:34,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935879434] [2024-11-10 15:06:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:34,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:34,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935879434] [2024-11-10 15:06:34,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935879434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:34,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:34,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:06:34,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684498117] [2024-11-10 15:06:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:34,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:06:34,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:06:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:06:34,264 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:34,306 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2024-11-10 15:06:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:06:34,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-11-10 15:06:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:34,307 INFO L225 Difference]: With dead ends: 104 [2024-11-10 15:06:34,307 INFO L226 Difference]: Without dead ends: 104 [2024-11-10 15:06:34,307 INFO L431 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 [2024-11-10 15:06:34,308 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:34,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 150 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:06:34,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-10 15:06:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2024-11-10 15:06:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 90 states have internal predecessors, (99), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2024-11-10 15:06:34,311 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 37 [2024-11-10 15:06:34,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:34,312 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2024-11-10 15:06:34,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2024-11-10 15:06:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-10 15:06:34,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:34,313 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:34,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 15:06:34,313 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:34,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash -427986266, now seen corresponding path program 1 times [2024-11-10 15:06:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598675764] [2024-11-10 15:06:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598675764] [2024-11-10 15:06:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598675764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71297205] [2024-11-10 15:06:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:34,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:34,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:34,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:06:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:34,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 15:06:34,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:34,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:06:34,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71297205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:34,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:06:34,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2024-11-10 15:06:34,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428912898] [2024-11-10 15:06:34,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:34,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:06:34,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:34,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:06:34,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:06:34,485 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:34,522 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions. [2024-11-10 15:06:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:06:34,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2024-11-10 15:06:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:34,523 INFO L225 Difference]: With dead ends: 113 [2024-11-10 15:06:34,523 INFO L226 Difference]: Without dead ends: 113 [2024-11-10 15:06:34,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:06:34,524 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 4 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:34,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 264 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:06:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-10 15:06:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2024-11-10 15:06:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 95 states have internal predecessors, (105), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2024-11-10 15:06:34,528 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 38 [2024-11-10 15:06:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:34,528 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2024-11-10 15:06:34,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2024-11-10 15:06:34,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-10 15:06:34,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:34,529 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:34,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 15:06:34,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 15:06:34,730 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:34,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2033409699, now seen corresponding path program 1 times [2024-11-10 15:06:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:34,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718351372] [2024-11-10 15:06:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:34,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:35,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:35,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:35,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:35,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:35,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718351372] [2024-11-10 15:06:35,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718351372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221634410] [2024-11-10 15:06:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:35,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:35,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:35,138 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:35,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:06:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:35,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-10 15:06:35,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:35,258 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 [2024-11-10 15:06:36,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:06:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:36,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2024-11-10 15:06:36,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:36,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:36,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:36,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:36,333 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-10 15:06:36,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 64 [2024-11-10 15:06:36,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:36,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:36,381 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-10 15:06:36,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 76 treesize of output 64 [2024-11-10 15:06:36,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:36,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:06:36,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 42 [2024-11-10 15:06:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 15:06:37,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:37,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:06:37,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 409 treesize of output 369 [2024-11-10 15:06:38,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221634410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:38,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:06:38,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 25 [2024-11-10 15:06:38,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119384218] [2024-11-10 15:06:38,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:38,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 15:06:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 15:06:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 15:06:38,442 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 26 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 24 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-10 15:06:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:40,978 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2024-11-10 15:06:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 15:06:40,979 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 24 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 39 [2024-11-10 15:06:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:40,980 INFO L225 Difference]: With dead ends: 155 [2024-11-10 15:06:40,980 INFO L226 Difference]: Without dead ends: 155 [2024-11-10 15:06:40,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=322, Invalid=2128, Unknown=0, NotChecked=0, Total=2450 [2024-11-10 15:06:40,981 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 325 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:40,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 592 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-10 15:06:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-10 15:06:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 110. [2024-11-10 15:06:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 96 states have internal predecessors, (105), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-10 15:06:40,989 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 39 [2024-11-10 15:06:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:40,990 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-10 15:06:40,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 24 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-10 15:06:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-10 15:06:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-10 15:06:40,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:40,990 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:41,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 15:06:41,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:41,191 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:41,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash -805640127, now seen corresponding path program 1 times [2024-11-10 15:06:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061140499] [2024-11-10 15:06:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:41,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:41,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:41,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:41,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:41,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:41,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061140499] [2024-11-10 15:06:41,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061140499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:41,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:41,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-10 15:06:41,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116441378] [2024-11-10 15:06:41,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:41,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:06:41,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:06:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:06:41,798 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-10 15:06:42,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:42,147 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2024-11-10 15:06:42,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:06:42,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2024-11-10 15:06:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:42,148 INFO L225 Difference]: With dead ends: 142 [2024-11-10 15:06:42,148 INFO L226 Difference]: Without dead ends: 142 [2024-11-10 15:06:42,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:06:42,151 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 93 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:42,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 693 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:06:42,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-10 15:06:42,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2024-11-10 15:06:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 96 states have internal predecessors, (104), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-10 15:06:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2024-11-10 15:06:42,155 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 41 [2024-11-10 15:06:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:42,155 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2024-11-10 15:06:42,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-10 15:06:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2024-11-10 15:06:42,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-10 15:06:42,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:42,156 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:42,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 15:06:42,157 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:42,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash -427493783, now seen corresponding path program 1 times [2024-11-10 15:06:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:42,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372855876] [2024-11-10 15:06:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:42,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:42,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:42,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372855876] [2024-11-10 15:06:42,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372855876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:42,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:42,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:06:42,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140529886] [2024-11-10 15:06:42,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:42,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:06:42,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:42,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:06:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:06:42,227 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-10 15:06:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:42,259 INFO L93 Difference]: Finished difference Result 166 states and 183 transitions. [2024-11-10 15:06:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:06:42,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 43 [2024-11-10 15:06:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:42,260 INFO L225 Difference]: With dead ends: 166 [2024-11-10 15:06:42,261 INFO L226 Difference]: Without dead ends: 166 [2024-11-10 15:06:42,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:06:42,261 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 50 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:42,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 591 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:06:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-10 15:06:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 116. [2024-11-10 15:06:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 101 states have internal predecessors, (108), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-10 15:06:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2024-11-10 15:06:42,266 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 43 [2024-11-10 15:06:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:42,267 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2024-11-10 15:06:42,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-10 15:06:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2024-11-10 15:06:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-10 15:06:42,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:42,268 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:42,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 15:06:42,268 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:42,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash -749495439, now seen corresponding path program 1 times [2024-11-10 15:06:42,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:42,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823756746] [2024-11-10 15:06:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:42,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:42,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823756746] [2024-11-10 15:06:42,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823756746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:42,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700969490] [2024-11-10 15:06:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:42,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:42,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:42,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 15:06:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 15:06:42,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:42,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700969490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:06:42,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:06:42,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-10 15:06:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147605351] [2024-11-10 15:06:42,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:42,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:06:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:06:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:06:42,518 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:42,583 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2024-11-10 15:06:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:06:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2024-11-10 15:06:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:42,585 INFO L225 Difference]: With dead ends: 139 [2024-11-10 15:06:42,585 INFO L226 Difference]: Without dead ends: 139 [2024-11-10 15:06:42,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:06:42,586 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 8 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:42,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 521 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:06:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-10 15:06:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2024-11-10 15:06:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 93 states have (on average 1.3978494623655915) internal successors, (130), 116 states have internal predecessors, (130), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-10 15:06:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2024-11-10 15:06:42,593 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 43 [2024-11-10 15:06:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:42,593 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2024-11-10 15:06:42,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:06:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2024-11-10 15:06:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 15:06:42,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:42,594 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:42,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 15:06:42,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:42,796 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:42,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:42,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1495372648, now seen corresponding path program 1 times [2024-11-10 15:06:42,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:42,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076247983] [2024-11-10 15:06:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:42,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:06:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:42,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076247983] [2024-11-10 15:06:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076247983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:42,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:42,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:06:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842727993] [2024-11-10 15:06:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:42,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:06:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:06:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:06:42,874 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:06:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:42,942 INFO L93 Difference]: Finished difference Result 127 states and 146 transitions. [2024-11-10 15:06:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:06:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-11-10 15:06:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:42,944 INFO L225 Difference]: With dead ends: 127 [2024-11-10 15:06:42,945 INFO L226 Difference]: Without dead ends: 127 [2024-11-10 15:06:42,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:06:42,946 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 57 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:42,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 142 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:06:42,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-10 15:06:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-10 15:06:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.3548387096774193) internal successors, (126), 112 states have internal predecessors, (126), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-10 15:06:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2024-11-10 15:06:42,953 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 45 [2024-11-10 15:06:42,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:42,954 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2024-11-10 15:06:42,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:06:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2024-11-10 15:06:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 15:06:42,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:42,954 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:42,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 15:06:42,955 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:42,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1495372649, now seen corresponding path program 1 times [2024-11-10 15:06:42,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:42,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129245446] [2024-11-10 15:06:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:42,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:06:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129245446] [2024-11-10 15:06:43,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129245446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:43,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:43,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:06:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274869748] [2024-11-10 15:06:43,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:43,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:06:43,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:43,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:06:43,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:06:43,069 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:06:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:43,151 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2024-11-10 15:06:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:06:43,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-11-10 15:06:43,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:43,153 INFO L225 Difference]: With dead ends: 123 [2024-11-10 15:06:43,153 INFO L226 Difference]: Without dead ends: 123 [2024-11-10 15:06:43,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:06:43,153 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 44 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:43,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 147 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:06:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-10 15:06:43,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-10 15:06:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 108 states have internal predecessors, (122), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-10 15:06:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2024-11-10 15:06:43,159 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 45 [2024-11-10 15:06:43,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:43,160 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2024-11-10 15:06:43,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:06:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2024-11-10 15:06:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-10 15:06:43,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:43,161 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:43,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 15:06:43,161 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:43,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1108342890, now seen corresponding path program 1 times [2024-11-10 15:06:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:43,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390393164] [2024-11-10 15:06:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:43,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:43,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390393164] [2024-11-10 15:06:43,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390393164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:43,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473540957] [2024-11-10 15:06:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:43,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:43,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:43,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:43,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 15:06:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 15:06:43,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:43,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473540957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:06:43,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:06:43,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-10 15:06:43,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146056698] [2024-11-10 15:06:43,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:43,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:06:43,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:06:43,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:06:43,381 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-11-10 15:06:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:43,419 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2024-11-10 15:06:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:06:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 46 [2024-11-10 15:06:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:43,421 INFO L225 Difference]: With dead ends: 123 [2024-11-10 15:06:43,421 INFO L226 Difference]: Without dead ends: 123 [2024-11-10 15:06:43,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:06:43,422 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 10 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:43,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 238 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:06:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-10 15:06:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-10 15:06:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 108 states have internal predecessors, (120), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-10 15:06:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 140 transitions. [2024-11-10 15:06:43,427 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 140 transitions. Word has length 46 [2024-11-10 15:06:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:43,427 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 140 transitions. [2024-11-10 15:06:43,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-11-10 15:06:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 140 transitions. [2024-11-10 15:06:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-10 15:06:43,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:43,428 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:43,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 15:06:43,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:43,633 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:43,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:43,633 INFO L85 PathProgramCache]: Analyzing trace with hash 410925446, now seen corresponding path program 2 times [2024-11-10 15:06:43,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:43,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058711594] [2024-11-10 15:06:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:43,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058711594] [2024-11-10 15:06:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058711594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991596800] [2024-11-10 15:06:43,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:06:43,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:43,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:43,795 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:43,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 15:06:43,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:06:43,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:06:43,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 15:06:43,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:44,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:44,166 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 30 treesize of output 26 [2024-11-10 15:06:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991596800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:06:44,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:06:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-10 15:06:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954591272] [2024-11-10 15:06:44,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:44,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 15:06:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 15:06:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-10 15:06:44,295 INFO L87 Difference]: Start difference. First operand 123 states and 140 transitions. Second operand has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 23 states have internal predecessors, (83), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-10 15:06:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:44,732 INFO L93 Difference]: Finished difference Result 134 states and 151 transitions. [2024-11-10 15:06:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:06:44,732 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 23 states have internal predecessors, (83), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 48 [2024-11-10 15:06:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:44,733 INFO L225 Difference]: With dead ends: 134 [2024-11-10 15:06:44,733 INFO L226 Difference]: Without dead ends: 134 [2024-11-10 15:06:44,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2024-11-10 15:06:44,734 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 158 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:44,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 489 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:06:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-10 15:06:44,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2024-11-10 15:06:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 107 states have internal predecessors, (118), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-10 15:06:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2024-11-10 15:06:44,738 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 48 [2024-11-10 15:06:44,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:44,739 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2024-11-10 15:06:44,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 23 states have internal predecessors, (83), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-10 15:06:44,739 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2024-11-10 15:06:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 15:06:44,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:44,740 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:44,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 15:06:44,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:44,941 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:44,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:44,941 INFO L85 PathProgramCache]: Analyzing trace with hash 555973181, now seen corresponding path program 1 times [2024-11-10 15:06:44,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:44,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440463275] [2024-11-10 15:06:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:44,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:06:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:45,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:45,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440463275] [2024-11-10 15:06:45,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440463275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:06:45,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:06:45,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 15:06:45,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720515509] [2024-11-10 15:06:45,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:06:45,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:06:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:06:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:06:45,089 INFO L87 Difference]: Start difference. First operand 122 states and 138 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:06:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:45,159 INFO L93 Difference]: Finished difference Result 154 states and 175 transitions. [2024-11-10 15:06:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:06:45,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2024-11-10 15:06:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:45,162 INFO L225 Difference]: With dead ends: 154 [2024-11-10 15:06:45,162 INFO L226 Difference]: Without dead ends: 154 [2024-11-10 15:06:45,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:06:45,163 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 24 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:45,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 380 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:06:45,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-10 15:06:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2024-11-10 15:06:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 100 states have (on average 1.25) internal successors, (125), 114 states have internal predecessors, (125), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-10 15:06:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2024-11-10 15:06:45,168 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 51 [2024-11-10 15:06:45,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:45,168 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2024-11-10 15:06:45,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:06:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2024-11-10 15:06:45,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-10 15:06:45,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:45,169 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:45,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 15:06:45,169 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:45,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash -146213042, now seen corresponding path program 1 times [2024-11-10 15:06:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945804823] [2024-11-10 15:06:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:45,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:45,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945804823] [2024-11-10 15:06:45,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945804823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670494887] [2024-11-10 15:06:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:45,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:45,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:45,350 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:45,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 15:06:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:45,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 15:06:45,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:45,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:45,724 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 30 treesize of output 26 [2024-11-10 15:06:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:06:45,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670494887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:06:45,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:06:45,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-10 15:06:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97306755] [2024-11-10 15:06:45,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:45,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 15:06:45,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:45,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 15:06:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2024-11-10 15:06:45,860 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand has 26 states, 25 states have (on average 3.44) internal successors, (86), 26 states have internal predecessors, (86), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-10 15:06:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:06:46,449 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2024-11-10 15:06:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 15:06:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.44) internal successors, (86), 26 states have internal predecessors, (86), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 49 [2024-11-10 15:06:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:06:46,451 INFO L225 Difference]: With dead ends: 140 [2024-11-10 15:06:46,451 INFO L226 Difference]: Without dead ends: 140 [2024-11-10 15:06:46,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=392, Invalid=1500, Unknown=0, NotChecked=0, Total=1892 [2024-11-10 15:06:46,452 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 128 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:06:46,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 961 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:06:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-10 15:06:46,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2024-11-10 15:06:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 100 states have (on average 1.24) internal successors, (124), 114 states have internal predecessors, (124), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-10 15:06:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2024-11-10 15:06:46,457 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 49 [2024-11-10 15:06:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:06:46,457 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2024-11-10 15:06:46,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.44) internal successors, (86), 26 states have internal predecessors, (86), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-10 15:06:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2024-11-10 15:06:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 15:06:46,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:06:46,458 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:06:46,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 15:06:46,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-10 15:06:46,659 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:06:46,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:06:46,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1215588496, now seen corresponding path program 2 times [2024-11-10 15:06:46,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:06:46,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392354544] [2024-11-10 15:06:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:06:46,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:06:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:47,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:06:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:47,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:06:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:47,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:06:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:47,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:06:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:06:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:06:47,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:06:47,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392354544] [2024-11-10 15:06:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392354544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:06:47,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244810784] [2024-11-10 15:06:47,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:06:47,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:06:47,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:06:47,763 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:06:47,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 15:06:47,879 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:06:47,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:06:47,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-10 15:06:47,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:06:48,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-10 15:06:48,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:48,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2024-11-10 15:06:48,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:06:48,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:06:48,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 46 [2024-11-10 15:06:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:49,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:06:49,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:06:49,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 503 treesize of output 435 [2024-11-10 15:06:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 15:06:51,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244810784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:06:51,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:06:51,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 17] total 44 [2024-11-10 15:06:51,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596392860] [2024-11-10 15:06:51,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:06:51,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-10 15:06:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:06:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-10 15:06:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1743, Unknown=0, NotChecked=0, Total=1892 [2024-11-10 15:06:51,625 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand has 44 states, 36 states have (on average 2.2777777777777777) internal successors, (82), 39 states have internal predecessors, (82), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-10 15:06:56,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:07:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:02,334 INFO L93 Difference]: Finished difference Result 193 states and 222 transitions. [2024-11-10 15:07:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:07:02,335 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 36 states have (on average 2.2777777777777777) internal successors, (82), 39 states have internal predecessors, (82), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 51 [2024-11-10 15:07:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:02,336 INFO L225 Difference]: With dead ends: 193 [2024-11-10 15:07:02,336 INFO L226 Difference]: Without dead ends: 190 [2024-11-10 15:07:02,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=377, Invalid=3045, Unknown=0, NotChecked=0, Total=3422 [2024-11-10 15:07:02,337 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 268 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:02,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 2262 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1367 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-11-10 15:07:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-10 15:07:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 135. [2024-11-10 15:07:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 119 states have internal predecessors, (128), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-10 15:07:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2024-11-10 15:07:02,343 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 51 [2024-11-10 15:07:02,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:02,343 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2024-11-10 15:07:02,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 36 states have (on average 2.2777777777777777) internal successors, (82), 39 states have internal predecessors, (82), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-10 15:07:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2024-11-10 15:07:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-10 15:07:02,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:02,344 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:02,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 15:07:02,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-10 15:07:02,549 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:02,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:02,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1294244677, now seen corresponding path program 1 times [2024-11-10 15:07:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:02,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830644548] [2024-11-10 15:07:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:02,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:02,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:02,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:02,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:02,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:02,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:07:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:07:02,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:02,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830644548] [2024-11-10 15:07:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830644548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:02,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:07:02,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-10 15:07:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870725771] [2024-11-10 15:07:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:02,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:07:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:02,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:07:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:07:02,836 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-10 15:07:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:03,038 INFO L93 Difference]: Finished difference Result 161 states and 179 transitions. [2024-11-10 15:07:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:07:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2024-11-10 15:07:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:03,040 INFO L225 Difference]: With dead ends: 161 [2024-11-10 15:07:03,041 INFO L226 Difference]: Without dead ends: 161 [2024-11-10 15:07:03,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:07:03,041 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 36 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:03,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 695 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:07:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-10 15:07:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 142. [2024-11-10 15:07:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 110 states have (on average 1.209090909090909) internal successors, (133), 125 states have internal predecessors, (133), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-10 15:07:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2024-11-10 15:07:03,046 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 53 [2024-11-10 15:07:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:03,046 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2024-11-10 15:07:03,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-10 15:07:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2024-11-10 15:07:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-10 15:07:03,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:03,047 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:03,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-10 15:07:03,047 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:03,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash -920589953, now seen corresponding path program 1 times [2024-11-10 15:07:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:03,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372478494] [2024-11-10 15:07:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:03,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:07:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-10 15:07:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 15:07:03,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:03,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372478494] [2024-11-10 15:07:03,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372478494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:03,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:07:03,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:07:03,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456141823] [2024-11-10 15:07:03,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:03,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:07:03,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:03,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:07:03,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:07:03,116 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-10 15:07:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:03,190 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2024-11-10 15:07:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:07:03,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2024-11-10 15:07:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:03,191 INFO L225 Difference]: With dead ends: 138 [2024-11-10 15:07:03,191 INFO L226 Difference]: Without dead ends: 138 [2024-11-10 15:07:03,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:07:03,192 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 42 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:03,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 133 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:07:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-10 15:07:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-10 15:07:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 110 states have (on average 1.1727272727272726) internal successors, (129), 121 states have internal predecessors, (129), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-10 15:07:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2024-11-10 15:07:03,199 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 56 [2024-11-10 15:07:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:03,199 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 153 transitions. [2024-11-10 15:07:03,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-10 15:07:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 153 transitions. [2024-11-10 15:07:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-10 15:07:03,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:03,203 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:03,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-10 15:07:03,203 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:03,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:03,204 INFO L85 PathProgramCache]: Analyzing trace with hash -920589952, now seen corresponding path program 1 times [2024-11-10 15:07:03,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:03,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141603566] [2024-11-10 15:07:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:03,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:07:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-10 15:07:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 15:07:03,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:03,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141603566] [2024-11-10 15:07:03,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141603566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:03,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:07:03,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:07:03,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200845533] [2024-11-10 15:07:03,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:03,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:07:03,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:03,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:07:03,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:07:03,299 INFO L87 Difference]: Start difference. First operand 138 states and 153 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-10 15:07:03,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:03,336 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2024-11-10 15:07:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:07:03,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2024-11-10 15:07:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:03,338 INFO L225 Difference]: With dead ends: 134 [2024-11-10 15:07:03,338 INFO L226 Difference]: Without dead ends: 134 [2024-11-10 15:07:03,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:07:03,339 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:03,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 94 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:07:03,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-10 15:07:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-10 15:07:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 117 states have internal predecessors, (125), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-10 15:07:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2024-11-10 15:07:03,344 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 56 [2024-11-10 15:07:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:03,344 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2024-11-10 15:07:03,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-10 15:07:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2024-11-10 15:07:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-10 15:07:03,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:03,345 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:03,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-10 15:07:03,346 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:03,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1491880609, now seen corresponding path program 2 times [2024-11-10 15:07:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:03,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194900752] [2024-11-10 15:07:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:03,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:07:03,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194900752] [2024-11-10 15:07:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194900752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608549926] [2024-11-10 15:07:03,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:07:03,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:03,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:07:03,456 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:07:03,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 15:07:03,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:07:03,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:07:03,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:07:03,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:07:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:07:03,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:07:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:07:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608549926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:07:03,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:07:03,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-11-10 15:07:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084818426] [2024-11-10 15:07:03,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:07:03,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:07:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:07:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:07:03,672 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:07:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:03,758 INFO L93 Difference]: Finished difference Result 173 states and 198 transitions. [2024-11-10 15:07:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 15:07:03,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2024-11-10 15:07:03,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:03,759 INFO L225 Difference]: With dead ends: 173 [2024-11-10 15:07:03,759 INFO L226 Difference]: Without dead ends: 173 [2024-11-10 15:07:03,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:07:03,760 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 21 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:03,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 364 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:07:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-10 15:07:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 159. [2024-11-10 15:07:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 135 states have (on average 1.162962962962963) internal successors, (157), 142 states have internal predecessors, (157), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-10 15:07:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 181 transitions. [2024-11-10 15:07:03,764 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 181 transitions. Word has length 54 [2024-11-10 15:07:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:03,765 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 181 transitions. [2024-11-10 15:07:03,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-10 15:07:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 181 transitions. [2024-11-10 15:07:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-10 15:07:03,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:03,766 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:03,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 15:07:03,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-10 15:07:03,967 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:03,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1498773718, now seen corresponding path program 1 times [2024-11-10 15:07:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:03,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618538953] [2024-11-10 15:07:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:03,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:07:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-10 15:07:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 15:07:04,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:04,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618538953] [2024-11-10 15:07:04,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618538953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:04,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:07:04,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 15:07:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588062700] [2024-11-10 15:07:04,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:04,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 15:07:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:04,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 15:07:04,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:07:04,146 INFO L87 Difference]: Start difference. First operand 159 states and 181 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-10 15:07:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:04,243 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2024-11-10 15:07:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:07:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2024-11-10 15:07:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:04,244 INFO L225 Difference]: With dead ends: 175 [2024-11-10 15:07:04,244 INFO L226 Difference]: Without dead ends: 175 [2024-11-10 15:07:04,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:07:04,245 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 14 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:04,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 379 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:07:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-10 15:07:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2024-11-10 15:07:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 139 states have (on average 1.158273381294964) internal successors, (161), 145 states have internal predecessors, (161), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-10 15:07:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 185 transitions. [2024-11-10 15:07:04,249 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 185 transitions. Word has length 62 [2024-11-10 15:07:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:04,250 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 185 transitions. [2024-11-10 15:07:04,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-10 15:07:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 185 transitions. [2024-11-10 15:07:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-10 15:07:04,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:04,251 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:04,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-10 15:07:04,251 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:04,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1529183596, now seen corresponding path program 3 times [2024-11-10 15:07:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:04,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337665926] [2024-11-10 15:07:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:07:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337665926] [2024-11-10 15:07:04,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337665926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846436373] [2024-11-10 15:07:04,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:07:04,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:04,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:07:04,480 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:07:04,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 15:07:04,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 15:07:04,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:07:04,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:07:04,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:07:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-10 15:07:04,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:07:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 36 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-10 15:07:05,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846436373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:07:05,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:07:05,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2024-11-10 15:07:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960575887] [2024-11-10 15:07:05,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:07:05,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 15:07:05,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 15:07:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-11-10 15:07:05,068 INFO L87 Difference]: Start difference. First operand 163 states and 185 transitions. Second operand has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-10 15:07:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:05,839 INFO L93 Difference]: Finished difference Result 192 states and 219 transitions. [2024-11-10 15:07:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 15:07:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2024-11-10 15:07:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:05,840 INFO L225 Difference]: With dead ends: 192 [2024-11-10 15:07:05,840 INFO L226 Difference]: Without dead ends: 192 [2024-11-10 15:07:05,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=550, Invalid=2420, Unknown=0, NotChecked=0, Total=2970 [2024-11-10 15:07:05,841 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 146 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:05,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 903 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:07:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-10 15:07:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 162. [2024-11-10 15:07:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 139 states have (on average 1.143884892086331) internal successors, (159), 144 states have internal predecessors, (159), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-10 15:07:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 183 transitions. [2024-11-10 15:07:05,846 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 183 transitions. Word has length 59 [2024-11-10 15:07:05,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:05,846 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 183 transitions. [2024-11-10 15:07:05,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.48) internal successors, (87), 26 states have internal predecessors, (87), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-10 15:07:05,846 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 183 transitions. [2024-11-10 15:07:05,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-10 15:07:05,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:05,847 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:05,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 15:07:06,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:06,048 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:06,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1798461420, now seen corresponding path program 1 times [2024-11-10 15:07:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:06,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120864703] [2024-11-10 15:07:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:06,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:07:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-10 15:07:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-10 15:07:06,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:06,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120864703] [2024-11-10 15:07:06,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120864703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:06,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:07:06,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 15:07:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489139339] [2024-11-10 15:07:06,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:06,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:07:06,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:06,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:07:06,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:07:06,344 INFO L87 Difference]: Start difference. First operand 162 states and 183 transitions. Second operand has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-10 15:07:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:06,526 INFO L93 Difference]: Finished difference Result 190 states and 216 transitions. [2024-11-10 15:07:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:07:06,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 64 [2024-11-10 15:07:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:06,527 INFO L225 Difference]: With dead ends: 190 [2024-11-10 15:07:06,527 INFO L226 Difference]: Without dead ends: 190 [2024-11-10 15:07:06,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:07:06,528 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 24 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:06,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 633 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:07:06,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-10 15:07:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2024-11-10 15:07:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 153 states have (on average 1.1437908496732025) internal successors, (175), 158 states have internal predecessors, (175), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-10 15:07:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 203 transitions. [2024-11-10 15:07:06,532 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 203 transitions. Word has length 64 [2024-11-10 15:07:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:06,532 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 203 transitions. [2024-11-10 15:07:06,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-10 15:07:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 203 transitions. [2024-11-10 15:07:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-10 15:07:06,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:06,534 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:06,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-10 15:07:06,534 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:06,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:06,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1764008575, now seen corresponding path program 1 times [2024-11-10 15:07:06,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:06,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903312055] [2024-11-10 15:07:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:06,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 15:07:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-10 15:07:06,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903312055] [2024-11-10 15:07:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903312055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850105364] [2024-11-10 15:07:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:06,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:07:06,700 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:07:06,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 15:07:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:06,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 15:07:06,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:07:07,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:07:07,119 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:07:07,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:07:07,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-10 15:07:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-10 15:07:07,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:07:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850105364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:07,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:07:07,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2024-11-10 15:07:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883570179] [2024-11-10 15:07:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:07,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 15:07:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 15:07:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:07:07,126 INFO L87 Difference]: Start difference. First operand 179 states and 203 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:07:11,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-10 15:07:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:11,270 INFO L93 Difference]: Finished difference Result 218 states and 241 transitions. [2024-11-10 15:07:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:07:11,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-10 15:07:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:11,271 INFO L225 Difference]: With dead ends: 218 [2024-11-10 15:07:11,271 INFO L226 Difference]: Without dead ends: 218 [2024-11-10 15:07:11,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:07:11,272 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 37 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:11,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 718 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-10 15:07:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-10 15:07:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 205. [2024-11-10 15:07:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 172 states have (on average 1.1395348837209303) internal successors, (196), 179 states have internal predecessors, (196), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-10 15:07:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 232 transitions. [2024-11-10 15:07:11,277 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 232 transitions. Word has length 66 [2024-11-10 15:07:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:11,278 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 232 transitions. [2024-11-10 15:07:11,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-10 15:07:11,278 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 232 transitions. [2024-11-10 15:07:11,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-10 15:07:11,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:11,279 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:11,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 15:07:11,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:11,480 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:11,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:11,480 INFO L85 PathProgramCache]: Analyzing trace with hash 759397044, now seen corresponding path program 3 times [2024-11-10 15:07:11,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:11,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122462137] [2024-11-10 15:07:11,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:11,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:13,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:13,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:13,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:13,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 31 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 15:07:13,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:13,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122462137] [2024-11-10 15:07:13,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122462137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:13,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688693167] [2024-11-10 15:07:13,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:07:13,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:13,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:07:13,922 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:07:13,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 15:07:14,053 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-10 15:07:14,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:07:14,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-10 15:07:14,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:07:14,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-11-10 15:07:14,345 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-10 15:07:14,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2024-11-10 15:07:15,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2024-11-10 15:07:15,321 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-10 15:07:15,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:07:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688693167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:20,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:07:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2024-11-10 15:07:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117814447] [2024-11-10 15:07:20,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:07:20,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-10 15:07:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-10 15:07:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2665, Unknown=1, NotChecked=0, Total=2970 [2024-11-10 15:07:20,391 INFO L87 Difference]: Start difference. First operand 205 states and 232 transitions. Second operand has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-10 15:07:24,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:24,154 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2024-11-10 15:07:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 15:07:24,154 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-10 15:07:24,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:24,155 INFO L225 Difference]: With dead ends: 159 [2024-11-10 15:07:24,155 INFO L226 Difference]: Without dead ends: 159 [2024-11-10 15:07:24,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=792, Invalid=5059, Unknown=1, NotChecked=0, Total=5852 [2024-11-10 15:07:24,157 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 124 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:24,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1116 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-10 15:07:24,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-10 15:07:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 144. [2024-11-10 15:07:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 114 states have (on average 1.0964912280701755) internal successors, (125), 120 states have internal predecessors, (125), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-10 15:07:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2024-11-10 15:07:24,161 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 66 [2024-11-10 15:07:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:24,162 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2024-11-10 15:07:24,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-10 15:07:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2024-11-10 15:07:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-10 15:07:24,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:24,164 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:24,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 15:07:24,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:24,365 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:24,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1708685569, now seen corresponding path program 1 times [2024-11-10 15:07:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:24,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819280598] [2024-11-10 15:07:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:24,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:24,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:24,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:24,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:24,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:24,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 15:07:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-10 15:07:24,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:24,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819280598] [2024-11-10 15:07:24,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819280598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:24,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045085244] [2024-11-10 15:07:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:24,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:24,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:07:24,694 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:07:24,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 15:07:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:24,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-10 15:07:24,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:07:25,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:07:25,282 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:07:25,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:07:25,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 12 [2024-11-10 15:07:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:07:25,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:07:25,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-10 15:07:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 15:07:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045085244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:07:25,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:07:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 15] total 33 [2024-11-10 15:07:25,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808312865] [2024-11-10 15:07:25,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:07:25,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-10 15:07:25,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-10 15:07:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2024-11-10 15:07:25,871 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand has 33 states, 29 states have (on average 3.8620689655172415) internal successors, (112), 32 states have internal predecessors, (112), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-10 15:07:26,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:26,480 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2024-11-10 15:07:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:07:26,481 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 3.8620689655172415) internal successors, (112), 32 states have internal predecessors, (112), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 68 [2024-11-10 15:07:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:26,481 INFO L225 Difference]: With dead ends: 155 [2024-11-10 15:07:26,481 INFO L226 Difference]: Without dead ends: 155 [2024-11-10 15:07:26,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=1637, Unknown=0, NotChecked=0, Total=1892 [2024-11-10 15:07:26,483 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 54 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:26,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1163 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:07:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-10 15:07:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 148. [2024-11-10 15:07:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 123 states have internal predecessors, (128), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-10 15:07:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2024-11-10 15:07:26,487 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 68 [2024-11-10 15:07:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:26,487 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2024-11-10 15:07:26,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 3.8620689655172415) internal successors, (112), 32 states have internal predecessors, (112), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-10 15:07:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2024-11-10 15:07:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-10 15:07:26,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:26,488 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:26,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 15:07:26,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-10 15:07:26,693 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:26,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:26,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1121463737, now seen corresponding path program 1 times [2024-11-10 15:07:26,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:26,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178803720] [2024-11-10 15:07:26,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:26,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:26,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:07:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-10 15:07:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 15:07:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 15:07:27,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:27,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178803720] [2024-11-10 15:07:27,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178803720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:27,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:07:27,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-10 15:07:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865223977] [2024-11-10 15:07:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:27,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:07:27,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:27,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:07:27,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:07:27,015 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-10 15:07:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:27,189 INFO L93 Difference]: Finished difference Result 176 states and 189 transitions. [2024-11-10 15:07:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 15:07:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-10 15:07:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:27,191 INFO L225 Difference]: With dead ends: 176 [2024-11-10 15:07:27,191 INFO L226 Difference]: Without dead ends: 176 [2024-11-10 15:07:27,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:07:27,192 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 15 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:27,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 458 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:07:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-10 15:07:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2024-11-10 15:07:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 138 states have (on average 1.0797101449275361) internal successors, (149), 145 states have internal predecessors, (149), 19 states have call successors, (19), 12 states have call predecessors, (19), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-10 15:07:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 187 transitions. [2024-11-10 15:07:27,200 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 187 transitions. Word has length 72 [2024-11-10 15:07:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:27,200 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 187 transitions. [2024-11-10 15:07:27,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-10 15:07:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 187 transitions. [2024-11-10 15:07:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-10 15:07:27,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:27,201 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:27,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-10 15:07:27,202 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:27,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1655815841, now seen corresponding path program 1 times [2024-11-10 15:07:27,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:27,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015044913] [2024-11-10 15:07:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:27,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:07:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-10 15:07:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 15:07:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 15:07:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:07:27,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015044913] [2024-11-10 15:07:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015044913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:27,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:07:27,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 15:07:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716516374] [2024-11-10 15:07:27,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:27,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:07:27,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:07:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:07:27,580 INFO L87 Difference]: Start difference. First operand 174 states and 187 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-10 15:07:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:27,855 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2024-11-10 15:07:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:07:27,855 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-11-10 15:07:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:27,856 INFO L225 Difference]: With dead ends: 174 [2024-11-10 15:07:27,856 INFO L226 Difference]: Without dead ends: 174 [2024-11-10 15:07:27,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:07:27,857 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 77 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:27,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 324 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:07:27,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-10 15:07:27,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-10 15:07:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 138 states have (on average 1.0724637681159421) internal successors, (148), 145 states have internal predecessors, (148), 19 states have call successors, (19), 12 states have call predecessors, (19), 12 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-10 15:07:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2024-11-10 15:07:27,861 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 76 [2024-11-10 15:07:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:27,862 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2024-11-10 15:07:27,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-10 15:07:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2024-11-10 15:07:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-10 15:07:27,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:27,862 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:27,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-10 15:07:27,863 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:27,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -435919932, now seen corresponding path program 1 times [2024-11-10 15:07:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861668446] [2024-11-10 15:07:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:27,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-10 15:07:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 15:07:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-10 15:07:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 15:07:28,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:28,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861668446] [2024-11-10 15:07:28,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861668446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:28,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283310424] [2024-11-10 15:07:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:28,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:28,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:07:28,198 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:07:28,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 15:07:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:28,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 15:07:28,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:07:28,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:07:28,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:07:29,689 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:07:29,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:07:29,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 16 [2024-11-10 15:07:29,736 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:07:29,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:07:29,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 12 [2024-11-10 15:07:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 15:07:29,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:07:29,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-10 15:07:29,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-10 15:07:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 15:07:30,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283310424] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:30,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:07:30,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 12] total 27 [2024-11-10 15:07:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267982611] [2024-11-10 15:07:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:30,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:07:30,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:07:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:07:30,253 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-10 15:07:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:30,402 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2024-11-10 15:07:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 15:07:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2024-11-10 15:07:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:30,403 INFO L225 Difference]: With dead ends: 182 [2024-11-10 15:07:30,403 INFO L226 Difference]: Without dead ends: 182 [2024-11-10 15:07:30,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 145 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2024-11-10 15:07:30,404 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 10 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:30,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 492 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:07:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-10 15:07:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 156. [2024-11-10 15:07:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 123 states have (on average 1.08130081300813) internal successors, (133), 129 states have internal predecessors, (133), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-10 15:07:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 163 transitions. [2024-11-10 15:07:30,410 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 163 transitions. Word has length 77 [2024-11-10 15:07:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:30,411 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 163 transitions. [2024-11-10 15:07:30,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-10 15:07:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 163 transitions. [2024-11-10 15:07:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-10 15:07:30,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:30,412 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:30,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 15:07:30,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-10 15:07:30,616 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:30,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:30,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2101124900, now seen corresponding path program 1 times [2024-11-10 15:07:30,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:30,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901780340] [2024-11-10 15:07:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 15:07:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-10 15:07:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-10 15:07:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 15:07:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 15:07:31,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:31,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901780340] [2024-11-10 15:07:31,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901780340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:07:31,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:07:31,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 15:07:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66227049] [2024-11-10 15:07:31,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:07:31,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 15:07:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 15:07:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:07:31,060 INFO L87 Difference]: Start difference. First operand 156 states and 163 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-10 15:07:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:07:31,476 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2024-11-10 15:07:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:07:31,476 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2024-11-10 15:07:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:07:31,477 INFO L225 Difference]: With dead ends: 156 [2024-11-10 15:07:31,477 INFO L226 Difference]: Without dead ends: 156 [2024-11-10 15:07:31,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:07:31,478 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 66 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:07:31,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 361 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:07:31,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-10 15:07:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-10 15:07:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 123 states have (on average 1.0731707317073171) internal successors, (132), 129 states have internal predecessors, (132), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-10 15:07:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 162 transitions. [2024-11-10 15:07:31,482 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 162 transitions. Word has length 78 [2024-11-10 15:07:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:07:31,482 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 162 transitions. [2024-11-10 15:07:31,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-10 15:07:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 162 transitions. [2024-11-10 15:07:31,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-10 15:07:31,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:07:31,484 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:07:31,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-10 15:07:31,484 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 34 more)] === [2024-11-10 15:07:31,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:07:31,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1945001198, now seen corresponding path program 1 times [2024-11-10 15:07:31,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:07:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376498825] [2024-11-10 15:07:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:07:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-10 15:07:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-10 15:07:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-10 15:07:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 15:07:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-10 15:07:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-10 15:07:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-10 15:07:31,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:07:31,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376498825] [2024-11-10 15:07:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376498825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:07:31,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195355495] [2024-11-10 15:07:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:07:31,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:07:31,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:07:31,686 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:07:31,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 15:07:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:07:31,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 15:07:31,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:07:32,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 15:07:32,214 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 15:07:32,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 15:07:32,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-10 15:07:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-10 15:07:32,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:07:32,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-10 15:07:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-10 15:07:32,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195355495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:07:32,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:07:32,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2024-11-10 15:07:32,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436656936] [2024-11-10 15:07:32,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:07:32,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:07:32,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:07:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:07:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:07:32,518 INFO L87 Difference]: Start difference. First operand 156 states and 162 transitions. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10)