./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/array-fpi/s4iff.c --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/s4iff.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/array-fpi/s4iff.c ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/s4iff.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 18:04:10,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-15 18:04:10,415 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-15 18:04:10,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-15 18:04:10,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-15 18:04:10,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-15 18:04:10,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-15 18:04:10,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-15 18:04:10,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-15 18:04:10,444 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-15 18:04:10,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-15 18:04:10,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-15 18:04:10,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-15 18:04:10,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-15 18:04:10,446 INFO L153 SettingsManager]: * Use SBE=true [2024-08-15 18:04:10,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-15 18:04:10,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-15 18:04:10,447 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-15 18:04:10,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-15 18:04:10,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-15 18:04:10,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-15 18:04:10,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-15 18:04:10,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-15 18:04:10,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-15 18:04:10,461 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-15 18:04:10,462 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-15 18:04:10,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-15 18:04:10,462 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-15 18:04:10,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-15 18:04:10,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-15 18:04:10,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-15 18:04:10,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-15 18:04:10,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-15 18:04:10,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-15 18:04:10,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-15 18:04:10,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-15 18:04:10,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-15 18:04:10,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-15 18:04:10,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-15 18:04:10,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-15 18:04:10,465 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-15 18:04:10,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-15 18:04:10,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-15 18:04:10,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-15 18:04:10,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-15 18:04:10,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-15 18:04:10,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-15 18:04:10,701 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-15 18:04:10,701 INFO L274 PluginConnector]: CDTParser initialized [2024-08-15 18:04:10,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2024-08-15 18:04:11,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-15 18:04:12,192 INFO L384 CDTParser]: Found 1 translation units. [2024-08-15 18:04:12,193 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4iff.c [2024-08-15 18:04:12,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7a5cd46f/23078f45bbac4ea59404c05f1ffe6de9/FLAG9d823fa54 [2024-08-15 18:04:12,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7a5cd46f/23078f45bbac4ea59404c05f1ffe6de9 [2024-08-15 18:04:12,609 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-15 18:04:12,609 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-15 18:04:12,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/s4iff.yml/witness.yml [2024-08-15 18:04:12,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-15 18:04:12,678 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-15 18:04:12,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-15 18:04:12,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-15 18:04:12,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-15 18:04:12,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:04:12" (1/2) ... [2024-08-15 18:04:12,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e36991a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:04:12, skipping insertion in model container [2024-08-15 18:04:12,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:04:12" (1/2) ... [2024-08-15 18:04:12,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@180205a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:04:12, skipping insertion in model container [2024-08-15 18:04:12,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:04:12" (2/2) ... [2024-08-15 18:04:12,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e36991a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:04:12, skipping insertion in model container [2024-08-15 18:04:12,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:04:12" (2/2) ... [2024-08-15 18:04:12,706 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-15 18:04:12,832 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4iff.c[588,601] [2024-08-15 18:04:12,847 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:04:12,854 INFO L200 MainTranslator]: Completed pre-run [2024-08-15 18:04:12,864 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4iff.c[588,601] [2024-08-15 18:04:12,870 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:04:12,883 INFO L204 MainTranslator]: Completed translation [2024-08-15 18:04:12,883 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:04:12 WrapperNode [2024-08-15 18:04:12,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-15 18:04:12,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-15 18:04:12,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-15 18:04:12,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-15 18:04:12,894 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,895 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,901 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,912 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 8, 6, 4]. 40 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 4 writes are split as follows [0, 0, 3, 1]. [2024-08-15 18:04:12,913 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,913 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,918 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,919 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,920 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-15 18:04:12,922 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-15 18:04:12,923 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-15 18:04:12,923 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-15 18:04:12,923 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 06:04:12" (1/1) ... [2024-08-15 18:04:12,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-15 18:04:12,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:04:12,978 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 18:04:12,983 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 18:04:13,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-15 18:04:13,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-15 18:04:13,044 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-15 18:04:13,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-08-15 18:04:13,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-08-15 18:04:13,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-15 18:04:13,045 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-15 18:04:13,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-15 18:04:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-15 18:04:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-15 18:04:13,046 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-08-15 18:04:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-15 18:04:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-08-15 18:04:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-08-15 18:04:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-08-15 18:04:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-15 18:04:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-15 18:04:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-15 18:04:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-08-15 18:04:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-08-15 18:04:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-08-15 18:04:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-15 18:04:13,116 INFO L273 CfgBuilder]: Building ICFG [2024-08-15 18:04:13,118 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-15 18:04:13,242 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(~#sum~0.base, ~#sum~0.offset);havoc ~#sum~0.base, ~#sum~0.offset; [2024-08-15 18:04:13,293 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-08-15 18:04:13,294 INFO L327 CfgBuilder]: Performing block encoding [2024-08-15 18:04:13,303 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-15 18:04:13,303 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-15 18:04:13,304 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:04:13 BoogieIcfgContainer [2024-08-15 18:04:13,304 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-15 18:04:13,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-15 18:04:13,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-15 18:04:13,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-15 18:04:13,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.08 06:04:12" (1/4) ... [2024-08-15 18:04:13,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e50ea9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:04:13, skipping insertion in model container [2024-08-15 18:04:13,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:04:12" (2/4) ... [2024-08-15 18:04:13,312 WARN L100 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-15 18:04:13,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e50ea9c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:04:13, skipping insertion in model container [2024-08-15 18:04:13,314 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 06:04:12" (3/4) ... [2024-08-15 18:04:13,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e50ea9c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:04:13, skipping insertion in model container [2024-08-15 18:04:13,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:04:13" (4/4) ... [2024-08-15 18:04:13,316 INFO L128 eAbstractionObserver]: Analyzing ICFG s4iff.c [2024-08-15 18:04:13,333 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-15 18:04:13,333 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-15 18:04:13,364 INFO L90 WitnessUtils]: Constructing product of automaton with 37 states and violation witness of the following lengths: [15] [2024-08-15 18:04:13,442 INFO L95 WitnessUtils]: Product has 186 reachable states. [2024-08-15 18:04:13,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-15 18:04:13,473 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;@7a548552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-15 18:04:13,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-15 18:04:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 212 transitions. [2024-08-15 18:04:13,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-08-15 18:04:13,483 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:04:13,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:04:13,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:04:13,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:04:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1202445938, now seen corresponding path program 1 times [2024-08-15 18:04:13,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:04:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733869561] [2024-08-15 18:04:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:04:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:04:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:04:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:04:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:04:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-08-15 18:04:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:04:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-08-15 18:04:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:04:13,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733869561] [2024-08-15 18:04:13,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733869561] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-15 18:04:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-15 18:04:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-15 18:04:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156686479] [2024-08-15 18:04:13,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-15 18:04:13,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-15 18:04:13,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:04:13,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-15 18:04:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-15 18:04:13,817 INFO L87 Difference]: Start difference. First operand 186 states and 212 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-08-15 18:04:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:04:13,879 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2024-08-15 18:04:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-15 18:04:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2024-08-15 18:04:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:04:13,889 INFO L225 Difference]: With dead ends: 100 [2024-08-15 18:04:13,890 INFO L226 Difference]: Without dead ends: 44 [2024-08-15 18:04:13,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-15 18:04:13,894 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-08-15 18:04:13,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-08-15 18:04:13,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-08-15 18:04:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2024-08-15 18:04:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-08-15 18:04:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-08-15 18:04:13,926 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 35 [2024-08-15 18:04:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:04:13,926 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-08-15 18:04:13,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-08-15 18:04:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-08-15 18:04:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-08-15 18:04:13,927 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:04:13,928 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:04:13,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-15 18:04:13,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:04:13,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:04:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash -378551593, now seen corresponding path program 1 times [2024-08-15 18:04:13,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:04:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924747727] [2024-08-15 18:04:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:04:13,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:04:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:04:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:04:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:04:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-08-15 18:04:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:04:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-15 18:04:14,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:04:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924747727] [2024-08-15 18:04:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924747727] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:04:14,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572593935] [2024-08-15 18:04:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:04:14,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:04:14,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:04:14,252 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 18:04:14,260 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 18:04:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:04:14,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2024-08-15 18:04:14,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-15 18:04:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-15 18:04:14,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-15 18:04:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-15 18:04:14,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572593935] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-15 18:04:14,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-15 18:04:14,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2024-08-15 18:04:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591916477] [2024-08-15 18:04:14,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-15 18:04:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-08-15 18:04:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:04:14,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-08-15 18:04:14,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-08-15 18:04:14,530 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-08-15 18:04:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:04:14,728 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2024-08-15 18:04:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-08-15 18:04:14,729 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-08-15 18:04:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:04:14,731 INFO L225 Difference]: With dead ends: 75 [2024-08-15 18:04:14,731 INFO L226 Difference]: Without dead ends: 64 [2024-08-15 18:04:14,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-08-15 18:04:14,732 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-08-15 18:04:14,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 78 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-08-15 18:04:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-08-15 18:04:14,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2024-08-15 18:04:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-08-15 18:04:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-08-15 18:04:14,743 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 37 [2024-08-15 18:04:14,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:04:14,743 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-08-15 18:04:14,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-08-15 18:04:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-08-15 18:04:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-08-15 18:04:14,745 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:04:14,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:04:14,762 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 18:04:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:04:14,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:04:14,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:04:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash 567512500, now seen corresponding path program 2 times [2024-08-15 18:04:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:04:14,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158274672] [2024-08-15 18:04:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:04:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:04:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:04:14,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-15 18:04:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:04:15,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-15 18:04:15,026 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-15 18:04:15,026 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-15 18:04:15,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-08-15 18:04:15,030 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2024-08-15 18:04:15,032 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2024-08-15 18:04:15,051 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.08 06:04:15 BoogieIcfgContainer [2024-08-15 18:04:15,051 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-15 18:04:15,052 INFO L158 Benchmark]: Toolchain (without parser) took 2373.91ms. Allocated memory was 174.1MB in the beginning and 224.4MB in the end (delta: 50.3MB). Free memory was 115.2MB in the beginning and 138.8MB in the end (delta: -23.6MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2024-08-15 18:04:15,052 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 174.1MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:04:15,052 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:04:15,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.47ms. Allocated memory is still 174.1MB. Free memory was 114.8MB in the beginning and 103.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-08-15 18:04:15,053 INFO L158 Benchmark]: Boogie Preprocessor took 37.39ms. Allocated memory is still 174.1MB. Free memory was 103.1MB in the beginning and 100.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-15 18:04:15,053 INFO L158 Benchmark]: IcfgBuilder took 381.90ms. Allocated memory is still 174.1MB. Free memory was 100.6MB in the beginning and 86.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-08-15 18:04:15,053 INFO L158 Benchmark]: TraceAbstraction took 1745.21ms. Allocated memory was 174.1MB in the beginning and 224.4MB in the end (delta: 50.3MB). Free memory was 85.1MB in the beginning and 138.8MB in the end (delta: -53.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:04:15,055 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 174.1MB. Free memory is still 137.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.47ms. Allocated memory is still 174.1MB. Free memory was 114.8MB in the beginning and 103.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.39ms. Allocated memory is still 174.1MB. Free memory was 103.1MB in the beginning and 100.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 381.90ms. Allocated memory is still 174.1MB. Free memory was 100.6MB in the beginning and 86.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1745.21ms. Allocated memory was 174.1MB in the beginning and 224.4MB in the end (delta: 50.3MB). Free memory was 85.1MB in the beginning and 138.8MB in the end (delta: -53.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0, \old(N)=116] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [N=2, \old(N)=0] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=2, \old(N)=0, \old(cond)=1] [L13] COND FALSE !(!cond) VAL [N=2, \old(N)=0, \old(cond)=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=2, \old(N)=0] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=2, \old(N)=0, a={-1:0}, i=0, sum={11:0}] [L32] COND TRUE i