./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/list-properties/list_search-1.i --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/list_search-1.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_search-1.i ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/list_search-1.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 18:24:32,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-15 18:24:32,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-15 18:24:32,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-15 18:24:32,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-15 18:24:32,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-15 18:24:32,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-15 18:24:32,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-15 18:24:32,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-15 18:24:32,868 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-15 18:24:32,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-15 18:24:32,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-15 18:24:32,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-15 18:24:32,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-15 18:24:32,870 INFO L153 SettingsManager]: * Use SBE=true [2024-08-15 18:24:32,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-15 18:24:32,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-15 18:24:32,874 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-15 18:24:32,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-15 18:24:32,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-15 18:24:32,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-15 18:24:32,875 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-15 18:24:32,875 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-15 18:24:32,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-15 18:24:32,876 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-15 18:24:32,876 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-15 18:24:32,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-15 18:24:32,877 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-15 18:24:32,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-15 18:24:32,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-15 18:24:32,877 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-15 18:24:32,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-15 18:24:32,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-15 18:24:32,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-15 18:24:32,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-15 18:24:32,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-15 18:24:32,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-15 18:24:32,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-15 18:24:32,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-15 18:24:32,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-15 18:24:32,882 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-15 18:24:32,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-15 18:24:32,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-15 18:24:32,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-15 18:24:33,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-15 18:24:33,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-15 18:24:33,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-15 18:24:33,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-15 18:24:33,177 INFO L274 PluginConnector]: CDTParser initialized [2024-08-15 18:24:33,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2024-08-15 18:24:34,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-15 18:24:34,953 INFO L384 CDTParser]: Found 1 translation units. [2024-08-15 18:24:34,954 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2024-08-15 18:24:34,967 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d5289c1/5a16c2f12a6249e29f4323c4191c4bb3/FLAG240919590 [2024-08-15 18:24:34,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d5289c1/5a16c2f12a6249e29f4323c4191c4bb3 [2024-08-15 18:24:34,981 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-15 18:24:34,982 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-15 18:24:34,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/list_search-1.yml/witness.yml [2024-08-15 18:24:35,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-15 18:24:35,075 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-15 18:24:35,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-15 18:24:35,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-15 18:24:35,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-15 18:24:35,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:24:34" (1/2) ... [2024-08-15 18:24:35,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ded7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:35, skipping insertion in model container [2024-08-15 18:24:35,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:24:34" (1/2) ... [2024-08-15 18:24:35,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61c7de16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:35, skipping insertion in model container [2024-08-15 18:24:35,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:35" (2/2) ... [2024-08-15 18:24:35,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ded7c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35, skipping insertion in model container [2024-08-15 18:24:35,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:35" (2/2) ... [2024-08-15 18:24:35,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-15 18:24:35,313 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_search-1.i[813,826] [2024-08-15 18:24:35,441 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:24:35,450 INFO L200 MainTranslator]: Completed pre-run [2024-08-15 18:24:35,465 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_search-1.i[813,826] [2024-08-15 18:24:35,507 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:24:35,543 INFO L204 MainTranslator]: Completed translation [2024-08-15 18:24:35,546 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35 WrapperNode [2024-08-15 18:24:35,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-15 18:24:35,547 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-15 18:24:35,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-15 18:24:35,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-15 18:24:35,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,598 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-08-15 18:24:35,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-15 18:24:35,624 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-15 18:24:35,624 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-15 18:24:35,624 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-15 18:24:35,625 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (1/1) ... [2024-08-15 18:24:35,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-15 18:24:35,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:24:35,666 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 18:24:35,668 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 18:24:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-15 18:24:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-15 18:24:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-15 18:24:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-08-15 18:24:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2024-08-15 18:24:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2024-08-15 18:24:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2024-08-15 18:24:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2024-08-15 18:24:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2024-08-15 18:24:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2024-08-15 18:24:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2024-08-15 18:24:35,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-15 18:24:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-15 18:24:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-15 18:24:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2024-08-15 18:24:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2024-08-15 18:24:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2024-08-15 18:24:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2024-08-15 18:24:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2024-08-15 18:24:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2024-08-15 18:24:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2024-08-15 18:24:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2024-08-15 18:24:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure select [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure random [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2024-08-15 18:24:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2024-08-15 18:24:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2024-08-15 18:24:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure free [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2024-08-15 18:24:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2024-08-15 18:24:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2024-08-15 18:24:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2024-08-15 18:24:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2024-08-15 18:24:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2024-08-15 18:24:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2024-08-15 18:24:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2024-08-15 18:24:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2024-08-15 18:24:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2024-08-15 18:24:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure system [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure div [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2024-08-15 18:24:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2024-08-15 18:24:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2024-08-15 18:24:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2024-08-15 18:24:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2024-08-15 18:24:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2024-08-15 18:24:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2024-08-15 18:24:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2024-08-15 18:24:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2024-08-15 18:24:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2024-08-15 18:24:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2024-08-15 18:24:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2024-08-15 18:24:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2024-08-15 18:24:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-15 18:24:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-08-15 18:24:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-08-15 18:24:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-08-15 18:24:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2024-08-15 18:24:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-08-15 18:24:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-15 18:24:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-08-15 18:24:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-08-15 18:24:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-08-15 18:24:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-15 18:24:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-15 18:24:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-15 18:24:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-15 18:24:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-08-15 18:24:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-15 18:24:35,937 INFO L273 CfgBuilder]: Building ICFG [2024-08-15 18:24:35,939 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-15 18:24:36,000 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L180: havoc #t~nondet1; [2024-08-15 18:24:36,067 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L185: havoc #t~nondet2; [2024-08-15 18:24:36,121 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-08-15 18:24:36,121 INFO L327 CfgBuilder]: Performing block encoding [2024-08-15 18:24:36,130 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-15 18:24:36,130 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-15 18:24:36,130 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:24:36 BoogieIcfgContainer [2024-08-15 18:24:36,130 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-15 18:24:36,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-15 18:24:36,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-15 18:24:36,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-15 18:24:36,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.08 06:24:34" (1/4) ... [2024-08-15 18:24:36,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3589734d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:24:36, skipping insertion in model container [2024-08-15 18:24:36,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:35" (2/4) ... [2024-08-15 18:24:36,137 WARN L100 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-15 18:24:36,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3589734d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:24:36, skipping insertion in model container [2024-08-15 18:24:36,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:35" (3/4) ... [2024-08-15 18:24:36,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3589734d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:24:36, skipping insertion in model container [2024-08-15 18:24:36,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:24:36" (4/4) ... [2024-08-15 18:24:36,140 INFO L128 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2024-08-15 18:24:36,158 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-15 18:24:36,159 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-15 18:24:36,192 INFO L90 WitnessUtils]: Constructing product of automaton with 46 states and violation witness of the following lengths: [21] [2024-08-15 18:24:36,337 INFO L95 WitnessUtils]: Product has 367 reachable states. [2024-08-15 18:24:36,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-15 18:24:36,376 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;@397b1776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-15 18:24:36,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-15 18:24:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 439 transitions. [2024-08-15 18:24:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-08-15 18:24:36,393 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:36,396 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:24:36,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:36,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:36,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1463477789, now seen corresponding path program 1 times [2024-08-15 18:24:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:36,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693266622] [2024-08-15 18:24:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:36,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:38,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:24:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-15 18:24:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-08-15 18:24:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:38,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-08-15 18:24:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-08-15 18:24:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-08-15 18:24:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-08-15 18:24:39,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:24:39,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693266622] [2024-08-15 18:24:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693266622] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:24:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896533340] [2024-08-15 18:24:39,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:39,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:24:39,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:24:39,373 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 18:24:39,375 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 18:24:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:39,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 75 conjunts are in the unsatisfiable core [2024-08-15 18:24:39,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-15 18:24:39,662 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 18:24:39,680 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 18 treesize of output 7 [2024-08-15 18:24:39,841 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 18:24:39,850 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 18:24:39,957 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-08-15 18:24:39,958 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 15 treesize of output 15 [2024-08-15 18:24:39,969 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 20 treesize of output 15 [2024-08-15 18:24:40,590 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 27 treesize of output 15 [2024-08-15 18:24:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-08-15 18:24:40,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-15 18:24:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896533340] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:24:41,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-08-15 18:24:41,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 27 [2024-08-15 18:24:41,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266770741] [2024-08-15 18:24:41,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-08-15 18:24:41,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-08-15 18:24:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:24:41,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-08-15 18:24:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2024-08-15 18:24:41,204 INFO L87 Difference]: Start difference. First operand 367 states and 439 transitions. Second operand has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 22 states have internal predecessors, (58), 6 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-08-15 18:24:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:24:42,754 INFO L93 Difference]: Finished difference Result 593 states and 660 transitions. [2024-08-15 18:24:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-08-15 18:24:42,757 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 22 states have internal predecessors, (58), 6 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 53 [2024-08-15 18:24:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:24:42,764 INFO L225 Difference]: With dead ends: 593 [2024-08-15 18:24:42,764 INFO L226 Difference]: Without dead ends: 61 [2024-08-15 18:24:42,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=303, Invalid=2453, Unknown=0, NotChecked=0, Total=2756 [2024-08-15 18:24:42,772 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 147 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-08-15 18:24:42,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 303 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-08-15 18:24:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-08-15 18:24:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-08-15 18:24:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-08-15 18:24:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-08-15 18:24:42,806 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 53 [2024-08-15 18:24:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:24:42,807 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-08-15 18:24:42,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 22 states have internal predecessors, (58), 6 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-08-15 18:24:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-08-15 18:24:42,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-08-15 18:24:42,809 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:42,809 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2024-08-15 18:24:42,832 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 18:24:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-08-15 18:24:43,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:43,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2100653046, now seen corresponding path program 2 times [2024-08-15 18:24:43,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:43,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646791067] [2024-08-15 18:24:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:43,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:44,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:24:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-15 18:24:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-08-15 18:24:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-08-15 18:24:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:44,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-08-15 18:24:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-08-15 18:24:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-08-15 18:24:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:24:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646791067] [2024-08-15 18:24:45,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646791067] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:24:45,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817035130] [2024-08-15 18:24:45,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-08-15 18:24:45,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:24:45,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:24:45,717 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 18:24:45,718 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 18:24:45,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-08-15 18:24:45,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-08-15 18:24:45,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 102 conjunts are in the unsatisfiable core [2024-08-15 18:24:45,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-15 18:24:45,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-08-15 18:24:46,007 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 22 treesize of output 1 [2024-08-15 18:24:46,266 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 [2024-08-15 18:24:46,281 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 [2024-08-15 18:24:46,428 INFO L349 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2024-08-15 18:24:46,430 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 22 treesize of output 27 [2024-08-15 18:24:46,458 INFO L349 Elim1Store]: treesize reduction 36, result has 37.9 percent of original size [2024-08-15 18:24:46,459 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 23 treesize of output 33 [2024-08-15 18:24:46,644 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-08-15 18:24:46,665 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-08-15 18:24:46,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-08-15 18:24:46,774 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 71 treesize of output 54 [2024-08-15 18:24:46,792 INFO L349 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2024-08-15 18:24:46,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2024-08-15 18:24:46,801 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 30 treesize of output 25 [2024-08-15 18:24:46,813 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 26 treesize of output 21 [2024-08-15 18:24:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-08-15 18:24:47,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-15 18:24:48,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-08-15 18:24:48,360 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2024-08-15 18:24:48,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-08-15 18:24:48,366 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2024-08-15 18:24:48,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817035130] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:24:48,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-08-15 18:24:48,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 42 [2024-08-15 18:24:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507402014] [2024-08-15 18:24:48,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-08-15 18:24:48,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-08-15 18:24:48,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:24:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-08-15 18:24:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2206, Unknown=0, NotChecked=0, Total=2352 [2024-08-15 18:24:48,449 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 42 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 38 states have internal predecessors, (77), 8 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-08-15 18:24:51,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:24:51,161 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2024-08-15 18:24:51,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-08-15 18:24:51,161 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 38 states have internal predecessors, (77), 8 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 58 [2024-08-15 18:24:51,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:24:51,162 INFO L225 Difference]: With dead ends: 70 [2024-08-15 18:24:51,162 INFO L226 Difference]: Without dead ends: 67 [2024-08-15 18:24:51,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=478, Invalid=4778, Unknown=0, NotChecked=0, Total=5256 [2024-08-15 18:24:51,165 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 235 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-08-15 18:24:51,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 314 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-08-15 18:24:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-08-15 18:24:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2024-08-15 18:24:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-08-15 18:24:51,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2024-08-15 18:24:51,173 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 58 [2024-08-15 18:24:51,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:24:51,173 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2024-08-15 18:24:51,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 38 states have internal predecessors, (77), 8 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-08-15 18:24:51,174 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2024-08-15 18:24:51,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-08-15 18:24:51,175 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:51,176 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1] [2024-08-15 18:24:51,198 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 18:24:51,376 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,SelfDestructingSolverStorable1 [2024-08-15 18:24:51,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:51,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1904139541, now seen corresponding path program 1 times [2024-08-15 18:24:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:51,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15006977] [2024-08-15 18:24:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:51,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:52,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:24:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:52,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-15 18:24:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-08-15 18:24:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:52,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-08-15 18:24:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-08-15 18:24:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-08-15 18:24:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-08-15 18:24:52,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:24:52,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15006977] [2024-08-15 18:24:52,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15006977] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:24:52,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329987990] [2024-08-15 18:24:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:52,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:24:52,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:24:52,588 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) [2024-08-15 18:24:52,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-08-15 18:24:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:52,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 60 conjunts are in the unsatisfiable core [2024-08-15 18:24:52,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-15 18:24:52,827 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 18:24:52,838 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 [2024-08-15 18:24:52,965 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 [2024-08-15 18:24:52,971 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2024-08-15 18:24:53,064 INFO L349 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2024-08-15 18:24:53,065 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 23 treesize of output 28 [2024-08-15 18:24:53,078 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-08-15 18:24:53,079 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 17 treesize of output 17 [2024-08-15 18:24:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-08-15 18:24:53,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-15 18:24:53,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-08-15 18:24:53,702 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 22 [2024-08-15 18:24:53,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329987990] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:24:53,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-08-15 18:24:53,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 29 [2024-08-15 18:24:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629023200] [2024-08-15 18:24:53,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-08-15 18:24:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-08-15 18:24:53,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:24:53,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-08-15 18:24:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2024-08-15 18:24:53,744 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 25 states have internal predecessors, (70), 6 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-08-15 18:24:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:24:54,934 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2024-08-15 18:24:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-08-15 18:24:54,934 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 25 states have internal predecessors, (70), 6 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 58 [2024-08-15 18:24:54,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:24:54,935 INFO L225 Difference]: With dead ends: 65 [2024-08-15 18:24:54,935 INFO L226 Difference]: Without dead ends: 65 [2024-08-15 18:24:54,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=430, Invalid=2650, Unknown=0, NotChecked=0, Total=3080 [2024-08-15 18:24:54,937 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 226 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-08-15 18:24:54,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 202 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-08-15 18:24:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-08-15 18:24:54,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-08-15 18:24:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-08-15 18:24:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2024-08-15 18:24:54,943 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 58 [2024-08-15 18:24:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:24:54,944 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2024-08-15 18:24:54,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 25 states have internal predecessors, (70), 6 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-08-15 18:24:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2024-08-15 18:24:54,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-08-15 18:24:54,945 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:54,945 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:24:54,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-08-15 18:24:55,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:24:55,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:55,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1783735741, now seen corresponding path program 3 times [2024-08-15 18:24:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:55,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371272541] [2024-08-15 18:24:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:24:55,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-15 18:24:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:24:55,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-15 18:24:55,257 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-15 18:24:55,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-15 18:24:55,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-08-15 18:24:55,263 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-08-15 18:24:55,266 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2024-08-15 18:24:55,287 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,290 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,290 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,290 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,291 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,291 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,291 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,292 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,292 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,292 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,293 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,293 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,293 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,297 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,297 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,297 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,298 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,299 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,301 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,301 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,302 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,302 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,302 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,302 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,303 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,303 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,303 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,304 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,306 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,306 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,307 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,307 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,307 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,307 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,307 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,308 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,308 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,308 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression [2024-08-15 18:24:55,312 WARN L916 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-08-15 18:24:55,319 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.08 06:24:55 BoogieIcfgContainer [2024-08-15 18:24:55,320 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-15 18:24:55,323 INFO L158 Benchmark]: Toolchain (without parser) took 20245.31ms. Allocated memory was 148.9MB in the beginning and 408.9MB in the end (delta: 260.0MB). Free memory was 92.8MB in the beginning and 313.3MB in the end (delta: -220.5MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2024-08-15 18:24:55,323 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 148.9MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:24:55,324 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 148.9MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:24:55,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.67ms. Allocated memory is still 148.9MB. Free memory was 92.4MB in the beginning and 73.8MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-08-15 18:24:55,324 INFO L158 Benchmark]: Boogie Preprocessor took 75.78ms. Allocated memory is still 148.9MB. Free memory was 73.8MB in the beginning and 70.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-08-15 18:24:55,324 INFO L158 Benchmark]: IcfgBuilder took 506.78ms. Allocated memory is still 148.9MB. Free memory was 70.4MB in the beginning and 46.6MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-08-15 18:24:55,326 INFO L158 Benchmark]: TraceAbstraction took 19187.08ms. Allocated memory was 148.9MB in the beginning and 408.9MB in the end (delta: 260.0MB). Free memory was 45.9MB in the beginning and 313.3MB in the end (delta: -267.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:24:55,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 148.9MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 148.9MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 467.67ms. Allocated memory is still 148.9MB. Free memory was 92.4MB in the beginning and 73.8MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.78ms. Allocated memory is still 148.9MB. Free memory was 73.8MB in the beginning and 70.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 506.78ms. Allocated memory is still 148.9MB. Free memory was 70.4MB in the beginning and 46.6MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19187.08ms. Allocated memory was 148.9MB in the beginning and 408.9MB in the end (delta: 260.0MB). Free memory was 45.9MB in the beginning and 313.3MB in the end (delta: -267.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: TemporaryPointerExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. * 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L533] mlist *head; VAL [head={0:0}] [L554] int i; [L555] mlist *mylist, *temp; VAL [head={0:0}] [L556] CALL insert_list(mylist,2) VAL [\old(k)=2, head={0:0}] [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k VAL [\old(k)=2, head={0:0}, k=2, l={-1:0}] [L544] COND TRUE head==((void *)0) [L545] l->next = ((void *)0) VAL [\old(k)=2, head={0:0}, k=2, l={-1:0}] [L550] head = l [L551] return 0; VAL [\old(k)=2, \result=0, head={-1:0}, k=2] [L556] RET insert_list(mylist,2) VAL [head={-1:0}, mylist={67:62}] [L557] CALL insert_list(mylist,5) VAL [\old(k)=5, head={-1:0}] [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k VAL [\old(k)=5, head={-1:0}, k=5, l={-5:0}] [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head VAL [\old(k)=5, head={-1:0}, l={-5:0}] [L550] head = l [L551] return 0; VAL [\old(k)=5, \result=0, head={-5:0}] [L557] RET insert_list(mylist,5) VAL [head={-5:0}, mylist={67:62}] [L558] CALL insert_list(mylist,1) VAL [\old(k)=1, head={-5:0}] [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k VAL [\old(k)=1, head={-5:0}, k=1, l={-3:0}] [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head VAL [\old(k)=1, head={-5:0}, l={-3:0}] [L550] head = l [L551] return 0; VAL [\old(k)=1, \result=0, head={-3:0}] [L558] RET insert_list(mylist,1) VAL [head={-3:0}, mylist={67:62}] [L559] CALL insert_list(mylist,3) VAL [\old(k)=3, head={-3:0}] [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k VAL [\old(k)=3, head={-3:0}, k=3, l={-4:0}] [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head VAL [\old(k)=3, head={-3:0}, l={-4:0}] [L550] head = l [L551] return 0; VAL [\old(k)=3, \result=0, head={-4:0}] [L559] RET insert_list(mylist,3) VAL [head={-4:0}, mylist={67:62}] [L560] CALL, EXPR search_list(head,2) VAL [\old(k)=2, head={-4:0}] [L535] l = head VAL [\old(k)=2, head={-4:0}, k=2, l={-4:0}] [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-4:0}, k=2, l={-4:0}] [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-4:0}, k=2, l={-4:0}] [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-4:0}, k=2, l={-3:0}] [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-4:0}, k=2, l={-3:0}] [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-4:0}, k=2, l={-5:0}] [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-4:0}, k=2, l={-5:0}] [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-4:0}, k=2, l={-1:0}] [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-4:0}, k=2, l={-1:0}] [L536] COND FALSE !(l!=((void *)0) && l->key!=k) [L539] return l; VAL [\old(k)=2, \result={-1:0}, head={-4:0}, k=2] [L560] RET, EXPR search_list(head,2) VAL [head={-4:0}, mylist={67:62}] [L560] temp = search_list(head,2) [L561] EXPR temp->key VAL [head={-4:0}, mylist={67:62}] [L561] CALL __VERIFIER_assert(temp->key==1) VAL [\old(cond)=0, head={-4:0}] [L14] COND TRUE !(cond) VAL [\old(cond)=0, head={-4:0}] [L15] reach_error() VAL [\old(cond)=0, head={-4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.1s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 610 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 608 mSDsluCounter, 819 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 758 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2973 IncrementalHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 61 mSDtfsCounter, 2973 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 392 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=0, InterpolantAutomatonStates: 78, 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, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 401 NumberOfCodeBlocks, 401 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 7625 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1330 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 6 InterpolantComputations, 0 PerfectInterpolantSequences, 138/240 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 18:24:55,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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