./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/list-properties/list-2.i --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/list-2.yml/witness.yml --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03fe66fa Calling Ultimate with: /root/.sdkman/candidates/java/current/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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/list-properties/list-2.i ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/list-2.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.yaml-violation-witnesses-03fe66f-m [2024-08-15 18:24:19,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-15 18:24:19,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-15 18:24:19,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-15 18:24:19,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-15 18:24:19,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-15 18:24:19,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-15 18:24:19,280 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-15 18:24:19,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-15 18:24:19,282 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-15 18:24:19,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-15 18:24:19,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-15 18:24:19,284 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-15 18:24:19,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-15 18:24:19,285 INFO L153 SettingsManager]: * Use SBE=true [2024-08-15 18:24:19,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-15 18:24:19,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-15 18:24:19,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-15 18:24:19,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-15 18:24:19,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-15 18:24:19,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-15 18:24:19,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-15 18:24:19,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-15 18:24:19,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-15 18:24:19,293 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-15 18:24:19,293 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-15 18:24:19,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-15 18:24:19,294 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-15 18:24:19,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-15 18:24:19,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-15 18:24:19,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-15 18:24:19,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-15 18:24:19,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-15 18:24:19,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-15 18:24:19,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-15 18:24:19,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-15 18:24:19,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-15 18:24:19,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-15 18:24:19,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-15 18:24:19,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-15 18:24:19,299 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-15 18:24:19,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-15 18:24:19,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-15 18:24:19,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-15 18:24:19,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-15 18:24:19,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-15 18:24:19,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-15 18:24:19,593 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-15 18:24:19,594 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-15 18:24:19,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/list-2.yml/witness.yml [2024-08-15 18:24:19,679 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-15 18:24:19,680 INFO L274 PluginConnector]: CDTParser initialized [2024-08-15 18:24:19,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2024-08-15 18:24:21,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-15 18:24:21,467 INFO L384 CDTParser]: Found 1 translation units. [2024-08-15 18:24:21,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i [2024-08-15 18:24:21,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c5231be/0bbdd963e4f7447b9dce7315010b6d92/FLAGfc0c75756 [2024-08-15 18:24:21,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27c5231be/0bbdd963e4f7447b9dce7315010b6d92 [2024-08-15 18:24:21,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-15 18:24:21,802 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-15 18:24:21,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-15 18:24:21,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-15 18:24:21,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-15 18:24:21,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:19" (1/2) ... [2024-08-15 18:24:21,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1890bffa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:21, skipping insertion in model container [2024-08-15 18:24:21,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:19" (1/2) ... [2024-08-15 18:24:21,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10a9d881 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:21, skipping insertion in model container [2024-08-15 18:24:21,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:24:21" (2/2) ... [2024-08-15 18:24:21,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1890bffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:21, skipping insertion in model container [2024-08-15 18:24:21,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:24:21" (2/2) ... [2024-08-15 18:24:21,860 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-15 18:24:22,194 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i[23408,23421] [2024-08-15 18:24:22,200 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:24:22,216 INFO L200 MainTranslator]: Completed pre-run [2024-08-15 18:24:22,271 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i[23408,23421] [2024-08-15 18:24:22,272 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:24:22,306 INFO L204 MainTranslator]: Completed translation [2024-08-15 18:24:22,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22 WrapperNode [2024-08-15 18:24:22,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-15 18:24:22,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-15 18:24:22,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-15 18:24:22,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-15 18:24:22,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,379 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-08-15 18:24:22,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-15 18:24:22,403 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-15 18:24:22,404 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-15 18:24:22,404 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-15 18:24:22,405 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (1/1) ... [2024-08-15 18:24:22,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-15 18:24:22,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:24:22,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-08-15 18:24:22,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-08-15 18:24:22,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-15 18:24:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-15 18:24:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-15 18:24:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2024-08-15 18:24:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2024-08-15 18:24:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2024-08-15 18:24:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2024-08-15 18:24:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2024-08-15 18:24:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-08-15 18:24:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-15 18:24:22,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-15 18:24:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-15 18:24:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2024-08-15 18:24:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2024-08-15 18:24:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-15 18:24:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-15 18:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-15 18:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2024-08-15 18:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2024-08-15 18:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2024-08-15 18:24:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2024-08-15 18:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2024-08-15 18:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2024-08-15 18:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2024-08-15 18:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2024-08-15 18:24:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2024-08-15 18:24:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2024-08-15 18:24:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2024-08-15 18:24:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2024-08-15 18:24:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2024-08-15 18:24:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2024-08-15 18:24:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2024-08-15 18:24:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2024-08-15 18:24:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2024-08-15 18:24:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2024-08-15 18:24:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2024-08-15 18:24:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2024-08-15 18:24:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2024-08-15 18:24:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure select [2024-08-15 18:24:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2024-08-15 18:24:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2024-08-15 18:24:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2024-08-15 18:24:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2024-08-15 18:24:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure random [2024-08-15 18:24:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2024-08-15 18:24:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2024-08-15 18:24:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2024-08-15 18:24:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2024-08-15 18:24:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2024-08-15 18:24:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2024-08-15 18:24:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2024-08-15 18:24:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2024-08-15 18:24:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2024-08-15 18:24:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2024-08-15 18:24:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2024-08-15 18:24:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2024-08-15 18:24:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2024-08-15 18:24:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2024-08-15 18:24:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2024-08-15 18:24:22,496 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2024-08-15 18:24:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2024-08-15 18:24:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2024-08-15 18:24:22,497 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2024-08-15 18:24:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2024-08-15 18:24:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2024-08-15 18:24:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2024-08-15 18:24:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2024-08-15 18:24:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2024-08-15 18:24:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2024-08-15 18:24:22,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2024-08-15 18:24:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2024-08-15 18:24:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2024-08-15 18:24:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2024-08-15 18:24:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2024-08-15 18:24:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2024-08-15 18:24:22,499 INFO L130 BoogieDeclarations]: Found specification of procedure free [2024-08-15 18:24:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2024-08-15 18:24:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2024-08-15 18:24:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2024-08-15 18:24:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2024-08-15 18:24:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2024-08-15 18:24:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2024-08-15 18:24:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2024-08-15 18:24:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2024-08-15 18:24:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2024-08-15 18:24:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2024-08-15 18:24:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2024-08-15 18:24:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2024-08-15 18:24:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2024-08-15 18:24:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2024-08-15 18:24:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2024-08-15 18:24:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2024-08-15 18:24:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2024-08-15 18:24:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2024-08-15 18:24:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2024-08-15 18:24:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure system [2024-08-15 18:24:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2024-08-15 18:24:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2024-08-15 18:24:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure div [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2024-08-15 18:24:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2024-08-15 18:24:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2024-08-15 18:24:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2024-08-15 18:24:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2024-08-15 18:24:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2024-08-15 18:24:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-08-15 18:24:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-15 18:24:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-08-15 18:24:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-15 18:24:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-08-15 18:24:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-08-15 18:24:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-08-15 18:24:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-08-15 18:24:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-08-15 18:24:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-15 18:24:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-08-15 18:24:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-15 18:24:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-15 18:24:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-08-15 18:24:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-15 18:24:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-15 18:24:22,771 INFO L273 CfgBuilder]: Building ICFG [2024-08-15 18:24:22,774 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-15 18:24:22,816 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-08-15 18:24:22,819 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L175: havoc #t~nondet1; [2024-08-15 18:24:22,941 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L180: havoc #t~nondet2; [2024-08-15 18:24:22,976 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-08-15 18:24:22,977 INFO L327 CfgBuilder]: Performing block encoding [2024-08-15 18:24:22,985 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-15 18:24:22,985 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-15 18:24:22,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:24:22 BoogieIcfgContainer [2024-08-15 18:24:22,986 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-15 18:24:22,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-15 18:24:22,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-15 18:24:22,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-15 18:24:22,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:19" (1/4) ... [2024-08-15 18:24:22,993 WARN L100 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-15 18:24:22,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd985c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:24:22, skipping insertion in model container [2024-08-15 18:24:22,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.08 06:24:21" (2/4) ... [2024-08-15 18:24:22,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd985c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:24:22, skipping insertion in model container [2024-08-15 18:24:22,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:22" (3/4) ... [2024-08-15 18:24:22,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd985c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:24:22, skipping insertion in model container [2024-08-15 18:24:22,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:24:22" (4/4) ... [2024-08-15 18:24:22,998 INFO L128 eAbstractionObserver]: Analyzing ICFG list-2.i [2024-08-15 18:24:23,018 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-15 18:24:23,018 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-15 18:24:23,048 INFO L90 WitnessUtils]: Constructing product of automaton with 44 states and violation witness of the following lengths: [12] [2024-08-15 18:24:23,136 INFO L95 WitnessUtils]: Product has 172 reachable states. [2024-08-15 18:24:23,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-15 18:24:23,170 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@21bc8a1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-15 18:24:23,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-15 18:24:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 211 transitions. [2024-08-15 18:24:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-08-15 18:24:23,179 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:23,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:24:23,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:23,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1546831486, now seen corresponding path program 1 times [2024-08-15 18:24:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:23,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109444162] [2024-08-15 18:24:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:23,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:24:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-15 18:24:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:24:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109444162] [2024-08-15 18:24:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109444162] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-15 18:24:23,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-15 18:24:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-15 18:24:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715952787] [2024-08-15 18:24:23,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-15 18:24:23,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-15 18:24:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:24:23,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-15 18:24:23,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-15 18:24:23,514 INFO L87 Difference]: Start difference. First operand 172 states and 211 transitions. Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:23,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:24:23,525 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2024-08-15 18:24:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-15 18:24:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-08-15 18:24:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:24:23,534 INFO L225 Difference]: With dead ends: 107 [2024-08-15 18:24:23,534 INFO L226 Difference]: Without dead ends: 44 [2024-08-15 18:24:23,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-15 18:24:23,539 INFO L413 NwaCegarLoop]: 49 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, 49 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 [2024-08-15 18:24:23,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-08-15 18:24:23,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-08-15 18:24:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2024-08-15 18:24:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-08-15 18:24:23,570 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 30 [2024-08-15 18:24:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:24:23,571 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-08-15 18:24:23,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-08-15 18:24:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-08-15 18:24:23,572 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:23,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:24:23,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-15 18:24:23,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:23,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1269100156, now seen corresponding path program 1 times [2024-08-15 18:24:23,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:23,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918823781] [2024-08-15 18:24:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:23,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:24,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:24:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-15 18:24:24,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:24:24,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918823781] [2024-08-15 18:24:24,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918823781] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:24:24,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835249371] [2024-08-15 18:24:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:24,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:24:24,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:24:24,686 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) [2024-08-15 18:24:24,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-08-15 18:24:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:24,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 54 conjunts are in the unsatisfiable core [2024-08-15 18:24:24,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-15 18:24:24,914 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 6 treesize of output 5 [2024-08-15 18:24:25,008 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-08-15 18:24:25,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-08-15 18:24:25,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-08-15 18:24:25,092 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 11 [2024-08-15 18:24:25,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-08-15 18:24:25,111 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 16 treesize of output 8 [2024-08-15 18:24:25,216 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 16 treesize of output 11 [2024-08-15 18:24:25,233 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-08-15 18:24:25,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-08-15 18:24:25,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-08-15 18:24:25,395 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 18 [2024-08-15 18:24:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-15 18:24:25,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-15 18:24:25,714 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_117 (Array Int Int)) (v_main_~t~0.base_12 Int)) (let ((.cse0 (store |c_#memory_int#1| c_main_~p~0.base v_ArrVal_117))) (or (not (= (select |c_#valid| v_main_~t~0.base_12) 0)) (= (select (select .cse0 c_main_~a~0.base) c_main_~a~0.offset) 1) (= (select (select (store .cse0 v_main_~t~0.base_12 (store (select .cse0 v_main_~t~0.base_12) 0 3)) c_main_~a~0.base) c_main_~a~0.offset) 3)))) is different from false [2024-08-15 18:24:25,851 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_117 (Array Int Int)) (v_main_~t~0.base_12 Int) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int#1| c_main_~p~0.base v_ArrVal_114) c_main_~t~0.base v_ArrVal_117))) (or (not (= (select |c_#valid| v_main_~t~0.base_12) 0)) (= 3 (select (select (store .cse0 v_main_~t~0.base_12 (store (select .cse0 v_main_~t~0.base_12) 0 3)) c_main_~a~0.base) c_main_~a~0.offset)) (= (select (select .cse0 c_main_~a~0.base) c_main_~a~0.offset) 1) (not (= (let ((.cse1 (+ c_main_~p~0.offset 4))) (store (select |c_#memory_int#1| c_main_~p~0.base) .cse1 (select v_ArrVal_114 .cse1))) v_ArrVal_114))))) is different from false [2024-08-15 18:24:25,915 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-08-15 18:24:25,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1699 treesize of output 1663 [2024-08-15 18:24:25,976 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 615 treesize of output 579 [2024-08-15 18:24:26,714 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 204 treesize of output 194 [2024-08-15 18:24:26,940 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 1077 treesize of output 1041 [2024-08-15 18:24:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-08-15 18:24:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835249371] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-15 18:24:28,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-15 18:24:28,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 24 [2024-08-15 18:24:28,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458508018] [2024-08-15 18:24:28,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-15 18:24:28,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-08-15 18:24:28,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:24:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-08-15 18:24:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=377, Unknown=2, NotChecked=82, Total=552 [2024-08-15 18:24:28,193 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:28,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:24:28,575 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2024-08-15 18:24:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-08-15 18:24:28,576 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-08-15 18:24:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:24:28,577 INFO L225 Difference]: With dead ends: 62 [2024-08-15 18:24:28,577 INFO L226 Difference]: Without dead ends: 62 [2024-08-15 18:24:28,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=552, Unknown=2, NotChecked=102, Total=812 [2024-08-15 18:24:28,579 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-08-15 18:24:28,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 294 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 201 Invalid, 0 Unknown, 95 Unchecked, 0.2s Time] [2024-08-15 18:24:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-08-15 18:24:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2024-08-15 18:24:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-08-15 18:24:28,592 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 36 [2024-08-15 18:24:28,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:24:28,592 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-08-15 18:24:28,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 24 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-08-15 18:24:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-08-15 18:24:28,595 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:28,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:24:28,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-08-15 18:24:28,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:24:28,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:28,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 461314974, now seen corresponding path program 1 times [2024-08-15 18:24:28,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:28,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715184484] [2024-08-15 18:24:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:28,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:29,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:24:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-15 18:24:29,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:24:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715184484] [2024-08-15 18:24:29,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715184484] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:24:29,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303208118] [2024-08-15 18:24:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:29,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:24:29,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:24:29,347 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) [2024-08-15 18:24:29,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-08-15 18:24:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:29,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 41 conjunts are in the unsatisfiable core [2024-08-15 18:24:29,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-15 18:24:29,491 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 6 treesize of output 5 [2024-08-15 18:24:29,534 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-08-15 18:24:29,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-08-15 18:24:29,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-08-15 18:24:29,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-08-15 18:24:29,567 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 16 treesize of output 8 [2024-08-15 18:24:29,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-08-15 18:24:29,612 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 16 treesize of output 11 [2024-08-15 18:24:29,646 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 16 treesize of output 11 [2024-08-15 18:24:29,694 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-08-15 18:24:29,694 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 1 case distinctions, treesize of input 19 treesize of output 22 [2024-08-15 18:24:29,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-08-15 18:24:29,739 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 31 treesize of output 23 [2024-08-15 18:24:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-15 18:24:29,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-15 18:24:29,809 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_202 (Array Int Int)) (v_main_~p~0.base_29 Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_int#1| c_main_~p~0.base v_ArrVal_202))) (store .cse0 v_main_~p~0.base_29 (store (select .cse0 v_main_~p~0.base_29) c_main_~t~0.offset 3))) c_main_~a~0.base) c_main_~a~0.offset) 2))) is different from false [2024-08-15 18:24:29,819 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_202 (Array Int Int)) (v_main_~p~0.base_29 Int)) (not (= 2 (select (select (let ((.cse0 (store |c_#memory_int#1| c_main_~p~0.base v_ArrVal_202))) (store .cse0 v_main_~p~0.base_29 (store (select .cse0 v_main_~p~0.base_29) 0 3))) c_main_~a~0.base) c_main_~a~0.offset)))) is different from false [2024-08-15 18:24:29,850 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 (Array Int Int)) (v_ArrVal_202 (Array Int Int)) (v_main_~p~0.base_29 Int)) (or (not (= v_ArrVal_198 (let ((.cse0 (+ c_main_~p~0.offset 4))) (store (select |c_#memory_int#1| c_main_~p~0.base) .cse0 (select v_ArrVal_198 .cse0))))) (not (= (select (select (let ((.cse1 (store (store |c_#memory_int#1| c_main_~p~0.base v_ArrVal_198) c_main_~t~0.base v_ArrVal_202))) (store .cse1 v_main_~p~0.base_29 (store (select .cse1 v_main_~p~0.base_29) 0 3))) c_main_~a~0.base) c_main_~a~0.offset) 2)))) is different from false [2024-08-15 18:24:29,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-08-15 18:24:29,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1011 treesize of output 1011 [2024-08-15 18:24:29,967 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 614 treesize of output 582 [2024-08-15 18:24:30,397 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 44 treesize of output 42 [2024-08-15 18:24:30,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-08-15 18:24:30,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-08-15 18:24:30,425 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 6 treesize of output 4 [2024-08-15 18:24:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-08-15 18:24:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303208118] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-15 18:24:30,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-15 18:24:30,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-08-15 18:24:30,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677764560] [2024-08-15 18:24:30,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-15 18:24:30,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-08-15 18:24:30,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:24:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-08-15 18:24:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=251, Unknown=3, NotChecked=102, Total=420 [2024-08-15 18:24:30,523 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:24:30,944 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-08-15 18:24:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-08-15 18:24:30,944 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-08-15 18:24:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:24:30,946 INFO L225 Difference]: With dead ends: 93 [2024-08-15 18:24:30,946 INFO L226 Difference]: Without dead ends: 93 [2024-08-15 18:24:30,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=645, Unknown=3, NotChecked=168, Total=992 [2024-08-15 18:24:30,948 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 87 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-08-15 18:24:30,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 365 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 188 Invalid, 0 Unknown, 214 Unchecked, 0.2s Time] [2024-08-15 18:24:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-08-15 18:24:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 64. [2024-08-15 18:24:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 60 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2024-08-15 18:24:30,959 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 40 [2024-08-15 18:24:30,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:24:30,960 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2024-08-15 18:24:30,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:24:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2024-08-15 18:24:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-08-15 18:24:30,961 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:30,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:24:30,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-08-15 18:24:31,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-08-15 18:24:31,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:31,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash -743005670, now seen corresponding path program 1 times [2024-08-15 18:24:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129538903] [2024-08-15 18:24:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:31,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:24:31,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-15 18:24:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:24:31,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-15 18:24:31,262 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-15 18:24:31,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-15 18:24:31,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-08-15 18:24:31,269 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-08-15 18:24:31,276 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2024-08-15 18:24:31,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.08 06:24:31 BoogieIcfgContainer [2024-08-15 18:24:31,302 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-15 18:24:31,302 INFO L158 Benchmark]: Toolchain (without parser) took 9500.45ms. Allocated memory was 159.4MB in the beginning and 339.7MB in the end (delta: 180.4MB). Free memory was 100.2MB in the beginning and 108.8MB in the end (delta: -8.6MB). Peak memory consumption was 173.8MB. Max. memory is 16.1GB. [2024-08-15 18:24:31,323 INFO L158 Benchmark]: Witness Parser took 0.24ms. Allocated memory is still 159.4MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:24:31,323 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:24:31,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.03ms. Allocated memory is still 159.4MB. Free memory was 99.8MB in the beginning and 80.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-08-15 18:24:31,324 INFO L158 Benchmark]: Boogie Preprocessor took 94.13ms. Allocated memory is still 159.4MB. Free memory was 80.9MB in the beginning and 77.3MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-15 18:24:31,324 INFO L158 Benchmark]: IcfgBuilder took 582.59ms. Allocated memory was 159.4MB in the beginning and 234.9MB in the end (delta: 75.5MB). Free memory was 77.3MB in the beginning and 188.1MB in the end (delta: -110.8MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2024-08-15 18:24:31,324 INFO L158 Benchmark]: TraceAbstraction took 8313.73ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 188.1MB in the beginning and 108.8MB in the end (delta: 79.3MB). Peak memory consumption was 184.2MB. Max. memory is 16.1GB. [2024-08-15 18:24:31,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.24ms. Allocated memory is still 159.4MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.03ms. Allocated memory is still 159.4MB. Free memory was 99.8MB in the beginning and 80.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.13ms. Allocated memory is still 159.4MB. Free memory was 80.9MB in the beginning and 77.3MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 582.59ms. Allocated memory was 159.4MB in the beginning and 234.9MB in the end (delta: 75.5MB). Free memory was 77.3MB in the beginning and 188.1MB in the end (delta: -110.8MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8313.73ms. Allocated memory was 234.9MB in the beginning and 339.7MB in the end (delta: 104.9MB). Free memory was 188.1MB in the beginning and 108.8MB in the end (delta: 79.3MB). Peak memory consumption was 184.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] COND TRUE __VERIFIER_nondet_int() [L537] p->h = 1 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND TRUE __VERIFIER_nondet_int() [L544] p->h = 2 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-1:0}, p={-2:0}, t={-3:0}] [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a VAL [p={-1:0}] [L552] EXPR p->h VAL [p={-1:0}] [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h VAL [p={-1:0}] [L554] COND TRUE p->h == 1 [L555] EXPR p->n [L555] p = p->n VAL [p={-2:0}] [L554] EXPR p->h VAL [p={-2:0}] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 708 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 309 IncrementalHoareTripleChecker+Unchecked, 594 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 389 IncrementalHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 114 mSDtfsCounter, 389 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 199 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 251 ConstructedInterpolants, 44 QuantifiedInterpolants, 3532 SizeOfPredicates, 12 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 11/47 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-08-15 18:24:31,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE