./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-08-08_07-59-58.files/protection-local/elimination_backoff_stack.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c091e2ee Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i ./goblint.2024-08-08_07-59-58.files/protection-local/elimination_backoff_stack.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-c091e2e-m [2024-08-14 12:07:30,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 12:07:30,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-08-14 12:07:30,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 12:07:30,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 12:07:30,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 12:07:30,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 12:07:30,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 12:07:30,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 12:07:30,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 12:07:31,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 12:07:31,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 12:07:31,001 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 12:07:31,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 12:07:31,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 12:07:31,002 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 12:07:31,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 12:07:31,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 12:07:31,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 12:07:31,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 12:07:31,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 12:07:31,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 12:07:31,004 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 12:07:31,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 12:07:31,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 12:07:31,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 12:07:31,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 12:07:31,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 12:07:31,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 12:07:31,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 12:07:31,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-14 12:07:31,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 12:07:31,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 12:07:31,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 12:07:31,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 12:07:31,011 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-08-14 12:07:31,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 12:07:31,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 12:07:31,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-08-14 12:07:31,016 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 12:07:31,016 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-08-14 12:07:31,016 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-08-14 12:07:31,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-08-14 12:07:31,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 12:07:31,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 12:07:31,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 12:07:31,299 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 12:07:31,300 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 12:07:31,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-08-14 12:07:32,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 12:07:32,990 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 12:07:32,991 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-08-14 12:07:33,021 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/946eb0905/6b6e16a348b9490a8d746a9fd570a55a/FLAGb34a2b864 [2024-08-14 12:07:33,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/946eb0905/6b6e16a348b9490a8d746a9fd570a55a [2024-08-14 12:07:33,040 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 12:07:33,042 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 12:07:33,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-08_07-59-58.files/protection-local/elimination_backoff_stack.yml/witness.yml [2024-08-14 12:07:33,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 12:07:33,169 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-08-14 12:07:33,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 12:07:33,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 12:07:33,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 12:07:33,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 12:07:33" (1/2) ... [2024-08-14 12:07:33,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b6ac65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 12:07:33, skipping insertion in model container [2024-08-14 12:07:33,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 12:07:33" (1/2) ... [2024-08-14 12:07:33,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1766f077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 12:07:33, skipping insertion in model container [2024-08-14 12:07:33,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 12:07:33" (2/2) ... [2024-08-14 12:07:33,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b6ac65 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:33, skipping insertion in model container [2024-08-14 12:07:33,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 12:07:33" (2/2) ... [2024-08-14 12:07:33,185 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-08-14 12:07:33,259 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-08-14 12:07:33,261 INFO L97 edCorrectnessWitness]: Location invariant before [L1367-L1372] 0 <= unique_id [2024-08-14 12:07:33,261 INFO L97 edCorrectnessWitness]: Location invariant before [L1528-L1528] 0 <= unique_id [2024-08-14 12:07:33,261 INFO L97 edCorrectnessWitness]: Location invariant before [L1564-L1564] 0 <= unique_id [2024-08-14 12:07:33,261 INFO L97 edCorrectnessWitness]: Location invariant before [L1355-L1360] 0 <= unique_id [2024-08-14 12:07:33,261 INFO L97 edCorrectnessWitness]: Location invariant before [L1387-L1392] 0 <= unique_id [2024-08-14 12:07:33,261 INFO L97 edCorrectnessWitness]: Location invariant before [L1517-L1517] 0 <= unique_id [2024-08-14 12:07:33,262 INFO L97 edCorrectnessWitness]: Location invariant before [L1491-L1491] 0 <= unique_id [2024-08-14 12:07:33,262 INFO L97 edCorrectnessWitness]: Location invariant before [L1400-L1400] 0 <= unique_id [2024-08-14 12:07:33,262 INFO L97 edCorrectnessWitness]: Location invariant before [L1547-L1547] 0 <= unique_id [2024-08-14 12:07:33,262 INFO L97 edCorrectnessWitness]: Location invariant before [L1481-L1485] 0 <= unique_id [2024-08-14 12:07:33,263 INFO L97 edCorrectnessWitness]: Location invariant before [L1466-L1466] 0 <= unique_id [2024-08-14 12:07:33,264 INFO L97 edCorrectnessWitness]: Location invariant before [L1552-L1552] 0 <= unique_id [2024-08-14 12:07:33,264 INFO L97 edCorrectnessWitness]: Location invariant before [L1559-L1559] 0 <= unique_id [2024-08-14 12:07:33,264 INFO L97 edCorrectnessWitness]: Location invariant before [L1409-L1409] 0 <= unique_id [2024-08-14 12:07:33,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-08-14 12:07:33,923 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 12:07:33,943 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-08-14 12:07:34,100 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 12:07:34,194 INFO L206 MainTranslator]: Completed translation [2024-08-14 12:07:34,195 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34 WrapperNode [2024-08-14 12:07:34,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 12:07:34,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-08-14 12:07:34,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-08-14 12:07:34,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-08-14 12:07:34,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,394 INFO L138 Inliner]: procedures = 396, calls = 191, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3888 [2024-08-14 12:07:34,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-08-14 12:07:34,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 12:07:34,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 12:07:34,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 12:07:34,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 12:07:34,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-08-14 12:07:34,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-08-14 12:07:34,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-08-14 12:07:34,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (1/1) ... [2024-08-14 12:07:34,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-14 12:07:34,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 12:07:34,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-08-14 12:07:34,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-08-14 12:07:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-08-14 12:07:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-08-14 12:07:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-08-14 12:07:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 12:07:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-08-14 12:07:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-08-14 12:07:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-08-14 12:07:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-08-14 12:07:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-08-14 12:07:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-08-14 12:07:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-08-14 12:07:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 12:07:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 12:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-08-14 12:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-08-14 12:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-08-14 12:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-08-14 12:07:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-08-14 12:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-08-14 12:07:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-08-14 12:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-08-14 12:07:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-08-14 12:07:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-08-14 12:07:34,643 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-08-14 12:07:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-08-14 12:07:34,647 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-08-14 12:07:34,984 INFO L244 CfgBuilder]: Building ICFG [2024-08-14 12:07:34,986 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 12:07:38,457 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-08-14 12:07:38,457 INFO L293 CfgBuilder]: Performing block encoding [2024-08-14 12:07:41,785 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 12:07:41,785 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-14 12:07:41,785 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 12:07:41 BoogieIcfgContainer [2024-08-14 12:07:41,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-08-14 12:07:41,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 12:07:41,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 12:07:41,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 12:07:41,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 12:07:33" (1/4) ... [2024-08-14 12:07:41,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323d5d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 12:07:41, skipping insertion in model container [2024-08-14 12:07:41,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.08 12:07:33" (2/4) ... [2024-08-14 12:07:41,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323d5d59 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.08 12:07:41, skipping insertion in model container [2024-08-14 12:07:41,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.08 12:07:34" (3/4) ... [2024-08-14 12:07:41,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323d5d59 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.08 12:07:41, skipping insertion in model container [2024-08-14 12:07:41,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 12:07:41" (4/4) ... [2024-08-14 12:07:41,794 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-08-14 12:07:41,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 12:07:41,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 116 error locations. [2024-08-14 12:07:41,813 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-08-14 12:07:42,539 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-08-14 12:07:42,597 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 12:07:42,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-14 12:07:42,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-14 12:07:42,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-14 12:07:42,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-08-14 12:07:42,677 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-14 12:07:42,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == instrPush1Thread1of1ForFork0 ======== [2024-08-14 12:07:42,771 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=PARTIAL_ORDER_FA, 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;@23febc61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 12:07:42,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-08-14 12:07:55,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPush1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPush1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPush1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-08-14 12:07:55,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 12:07:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1924638129, now seen corresponding path program 1 times [2024-08-14 12:07:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 12:07:55,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569181619] [2024-08-14 12:07:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 12:07:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 12:07:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 12:07:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 12:07:55,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 12:07:55,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569181619] [2024-08-14 12:07:55,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569181619] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 12:07:55,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 12:07:55,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-14 12:07:55,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300610067] [2024-08-14 12:07:55,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 12:07:55,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 12:07:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 12:07:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 12:07:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 12:07:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 12:07:55,504 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 12:07:55,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 12:07:55,506 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-14 12:08:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 12:08:21,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-14 12:08:21,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting instrPush1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPush1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPush1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPush1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-08-14 12:08:21,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 12:08:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash 953286078, now seen corresponding path program 1 times [2024-08-14 12:08:21,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 12:08:21,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990972908] [2024-08-14 12:08:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 12:08:21,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 12:08:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 12:08:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-14 12:08:22,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 12:08:22,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990972908] [2024-08-14 12:08:22,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990972908] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 12:08:22,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 12:08:22,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 12:08:22,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667602622] [2024-08-14 12:08:22,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 12:08:22,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-14 12:08:22,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 12:08:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-14 12:08:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-14 12:08:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-14 12:08:22,140 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-14 12:08:22,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-08-14 12:08:22,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-14 12:08:22,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15