./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-08-20_10-08-36.files/mutex-meet-local/popl20-bad-threaded-sum-2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version da67795f 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/weaver/popl20-bad-threaded-sum-2.wvr.c ./goblint.2024-08-20_10-08-36.files/mutex-meet-local/popl20-bad-threaded-sum-2.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.goblint-eval-da67795-m [2024-08-27 10:25:17,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-27 10:25:17,282 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-08-27 10:25:17,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-27 10:25:17,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-27 10:25:17,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-27 10:25:17,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-27 10:25:17,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-27 10:25:17,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-27 10:25:17,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-27 10:25:17,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-27 10:25:17,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-27 10:25:17,329 INFO L153 SettingsManager]: * Use SBE=true [2024-08-27 10:25:17,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-27 10:25:17,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-27 10:25:17,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-27 10:25:17,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-27 10:25:17,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-27 10:25:17,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-27 10:25:17,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-27 10:25:17,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-27 10:25:17,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-27 10:25:17,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-27 10:25:17,338 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-27 10:25:17,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-27 10:25:17,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-27 10:25:17,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-27 10:25:17,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-27 10:25:17,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-27 10:25:17,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-27 10:25:17,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-27 10:25:17,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-27 10:25:17,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-27 10:25:17,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-27 10:25:17,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-27 10:25:17,341 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-08-27 10:25:17,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-27 10:25:17,343 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-27 10:25:17,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-08-27 10:25:17,343 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-27 10:25:17,343 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-08-27 10:25:17,344 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-08-27 10:25:17,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-08-27 10:25:17,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-27 10:25:17,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-27 10:25:17,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-27 10:25:17,633 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-27 10:25:17,634 INFO L274 PluginConnector]: CDTParser initialized [2024-08-27 10:25:17,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-08-27 10:25:19,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-27 10:25:19,324 INFO L384 CDTParser]: Found 1 translation units. [2024-08-27 10:25:19,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2024-08-27 10:25:19,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/1c41070e8/cb7482b451c24209a9d44460cefeed81/FLAG47f2b02a8 [2024-08-27 10:25:19,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/1c41070e8/cb7482b451c24209a9d44460cefeed81 [2024-08-27 10:25:19,346 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-27 10:25:19,346 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-27 10:25:19,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-20_10-08-36.files/mutex-meet-local/popl20-bad-threaded-sum-2.wvr.yml/witness.yml [2024-08-27 10:25:19,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-27 10:25:19,413 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-08-27 10:25:19,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-27 10:25:19,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-27 10:25:19,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-27 10:25:19,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:25:19" (1/2) ... [2024-08-27 10:25:19,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a2d38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:25:19, skipping insertion in model container [2024-08-27 10:25:19,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:25:19" (1/2) ... [2024-08-27 10:25:19,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44beba74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:25:19, skipping insertion in model container [2024-08-27 10:25:19,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.08 10:25:19" (2/2) ... [2024-08-27 10:25:19,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a2d38e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19, skipping insertion in model container [2024-08-27 10:25:19,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.08 10:25:19" (2/2) ... [2024-08-27 10:25:19,423 INFO L85 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-08-27 10:25:19,439 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-08-27 10:25:19,440 INFO L1541 ArrayList]: Location invariant before [L71-L71] (((-2LL + (long long )S) + (long long )T >= 0LL) && ((4294967294LL - (long long )S) + (long long )T >= 0LL)) && ((4294967294LL + (long long )S) - (long long )T >= 0LL) [2024-08-27 10:25:19,440 INFO L1541 ArrayList]: Location invariant before [L68-L68] (((-2LL + (long long )S) + (long long )T >= 0LL) && ((4294967294LL - (long long )S) + (long long )T >= 0LL)) && ((4294967294LL + (long long )S) - (long long )T >= 0LL) [2024-08-27 10:25:19,440 INFO L1541 ArrayList]: Location invariant before [L61-L61] (((-2LL + (long long )S) + (long long )T >= 0LL) && ((4294967294LL - (long long )S) + (long long )T >= 0LL)) && ((4294967294LL + (long long )S) - (long long )T >= 0LL) [2024-08-27 10:25:19,440 INFO L1541 ArrayList]: Location invariant before [L46-L49] (((-2LL + (long long )S) + (long long )T >= 0LL) && ((4294967294LL - (long long )S) + (long long )T >= 0LL)) && ((4294967294LL + (long long )S) - (long long )T >= 0LL) [2024-08-27 10:25:19,441 INFO L1541 ArrayList]: Location invariant before [L42-L42] (((-2LL + (long long )S) + (long long )T >= 0LL) && ((4294967294LL - (long long )S) + (long long )T >= 0LL)) && ((4294967294LL + (long long )S) - (long long )T >= 0LL) [2024-08-27 10:25:19,441 INFO L1541 ArrayList]: Location invariant before [L65-L65] (((-2LL + (long long )S) + (long long )T >= 0LL) && ((4294967294LL - (long long )S) + (long long )T >= 0LL)) && ((4294967294LL + (long long )S) - (long long )T >= 0LL) [2024-08-27 10:25:19,441 INFO L1541 ArrayList]: Location invariant before [L52-L52] (((-2LL + (long long )S) + (long long )T >= 0LL) && ((4294967294LL - (long long )S) + (long long )T >= 0LL)) && ((4294967294LL + (long long )S) - (long long )T >= 0LL) [2024-08-27 10:25:19,459 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-08-27 10:25:19,646 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c[2502,2515] [2024-08-27 10:25:19,650 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-27 10:25:19,658 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 [2024-08-27 10:25:19,716 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c[2502,2515] [2024-08-27 10:25:19,717 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-27 10:25:19,736 INFO L206 MainTranslator]: Completed translation [2024-08-27 10:25:19,736 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19 WrapperNode [2024-08-27 10:25:19,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-27 10:25:19,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-08-27 10:25:19,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-08-27 10:25:19,737 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-08-27 10:25:19,743 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 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,751 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 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,776 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2024-08-27 10:25:19,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-08-27 10:25:19,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-27 10:25:19,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-27 10:25:19,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-27 10:25:19,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-27 10:25:19,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-08-27 10:25:19,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-08-27 10:25:19,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-08-27 10:25:19,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (1/1) ... [2024-08-27 10:25:19,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-27 10:25:19,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:25:19,849 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) [2024-08-27 10:25:19,854 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 [2024-08-27 10:25:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-27 10:25:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-08-27 10:25:19,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-08-27 10:25:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-08-27 10:25:19,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-08-27 10:25:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-08-27 10:25:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-08-27 10:25:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-08-27 10:25:19,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-27 10:25:19,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-27 10:25:19,905 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-08-27 10:25:19,996 INFO L242 CfgBuilder]: Building ICFG [2024-08-27 10:25:19,998 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-27 10:25:20,283 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-08-27 10:25:20,283 INFO L291 CfgBuilder]: Performing block encoding [2024-08-27 10:25:20,506 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-27 10:25:20,506 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-08-27 10:25:20,506 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:25:20 BoogieIcfgContainer [2024-08-27 10:25:20,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-08-27 10:25:20,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-27 10:25:20,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-27 10:25:20,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-27 10:25:20,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:25:19" (1/4) ... [2024-08-27 10:25:20,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f97d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:25:20, skipping insertion in model container [2024-08-27 10:25:20,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.08 10:25:19" (2/4) ... [2024-08-27 10:25:20,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f97d6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.08 10:25:20, skipping insertion in model container [2024-08-27 10:25:20,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 10:25:19" (3/4) ... [2024-08-27 10:25:20,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f97d6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.08 10:25:20, skipping insertion in model container [2024-08-27 10:25:20,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:25:20" (4/4) ... [2024-08-27 10:25:20,514 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2024-08-27 10:25:20,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-27 10:25:20,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-08-27 10:25:20,527 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-08-27 10:25:20,575 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-08-27 10:25:20,616 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-27 10:25:20,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-27 10:25:20,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:25:20,619 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) [2024-08-27 10:25:20,621 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 [2024-08-27 10:25:20,653 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-27 10:25:20,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread2Thread1of1ForFork1 ======== [2024-08-27 10:25:20,675 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;@7e51de23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-27 10:25:20,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-08-27 10:25:20,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 1 more)] === [2024-08-27 10:25:20,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:25:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1698305817, now seen corresponding path program 1 times [2024-08-27 10:25:20,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:25:20,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528398830] [2024-08-27 10:25:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:25:20,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:25:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:25:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:25:21,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:25:21,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528398830] [2024-08-27 10:25:21,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528398830] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-27 10:25:21,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-27 10:25:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-27 10:25:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940276379] [2024-08-27 10:25:21,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-27 10:25:21,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-27 10:25:21,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:25:21,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-27 10:25:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-27 10:25:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:25:21,352 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:25:21,353 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) [2024-08-27 10:25:21,353 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:25:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-27 10:25:21,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-08-27 10:25:21,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-08-27 10:25:21,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 4 remaining) [2024-08-27 10:25:21,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 4 remaining) [2024-08-27 10:25:21,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-27 10:25:21,670 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-08-27 10:25:21,672 INFO L308 ceAbstractionStarter]: Result for error location thread2Thread1of1ForFork1 was SAFE,SAFE,SAFE,SAFE (1/3) [2024-08-27 10:25:21,677 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-27 10:25:21,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-27 10:25:21,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:25:21,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-27 10:25:21,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2024-08-27 10:25:21,699 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-27 10:25:21,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread1Thread1of1ForFork0 ======== [2024-08-27 10:25:21,700 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;@7e51de23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-27 10:25:21,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-08-27 10:25:21,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT] === [2024-08-27 10:25:21,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:25:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash 9290139, now seen corresponding path program 1 times [2024-08-27 10:25:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:25:21,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102411548] [2024-08-27 10:25:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:25:21,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:25:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:25:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:25:21,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:25:21,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102411548] [2024-08-27 10:25:21,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102411548] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-27 10:25:21,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-27 10:25:21,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-08-27 10:25:21,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138480740] [2024-08-27 10:25:21,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-27 10:25:21,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-27 10:25:21,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:25:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-27 10:25:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-27 10:25:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:25:21,986 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:25:21,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2024-08-27 10:25:21,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:25:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-27 10:25:22,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining) [2024-08-27 10:25:22,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 3 remaining) [2024-08-27 10:25:22,178 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 3 remaining) [2024-08-27 10:25:22,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-27 10:25:22,181 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-08-27 10:25:22,181 INFO L308 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork0 was SAFE,SAFE,SAFE (2/3) [2024-08-27 10:25:22,184 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-27 10:25:22,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-27 10:25:22,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:25:22,187 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-08-27 10:25:22,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2024-08-27 10:25:22,191 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-27 10:25:22,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-27 10:25:22,193 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;@7e51de23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-27 10:25:22,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-08-27 10:25:22,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-27 10:25:22,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:25:22,295 INFO L85 PathProgramCache]: Analyzing trace with hash -666316384, now seen corresponding path program 1 times [2024-08-27 10:25:22,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:25:22,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330284465] [2024-08-27 10:25:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:25:22,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:25:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:25:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:25:22,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:25:22,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330284465] [2024-08-27 10:25:22,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330284465] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-27 10:25:22,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970012643] [2024-08-27 10:25:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:25:22,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:25:22,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:25:22,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-27 10:25:22,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-08-27 10:25:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:25:22,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2024-08-27 10:25:22,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-27 10:25:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:25:22,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-08-27 10:25:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970012643] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-27 10:25:22,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-08-27 10:25:22,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2024-08-27 10:25:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783239244] [2024-08-27 10:25:22,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-27 10:25:22,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-08-27 10:25:22,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:25:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-08-27 10:25:22,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-08-27 10:25:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:25:22,769 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:25:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-08-27 10:25:22,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:25:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:25:23,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-08-27 10:25:23,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:25:23,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-27 10:25:23,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:25:23,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1702447639, now seen corresponding path program 1 times [2024-08-27 10:25:23,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:25:23,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518890017] [2024-08-27 10:25:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:25:23,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:25:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:25:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:25:24,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:25:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518890017] [2024-08-27 10:25:24,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518890017] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-27 10:25:24,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950114964] [2024-08-27 10:25:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:25:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:25:24,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:25:24,841 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-27 10:25:24,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-08-27 10:25:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:25:24,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2024-08-27 10:25:24,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-27 10:25:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:25:30,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-27 10:25:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:25:31,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950114964] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-27 10:25:31,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-27 10:25:31,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-08-27 10:25:31,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785993878] [2024-08-27 10:25:31,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-27 10:25:31,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-08-27 10:25:31,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:25:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-08-27 10:25:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=533, Unknown=2, NotChecked=0, Total=650 [2024-08-27 10:25:31,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:25:31,606 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:25:31,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 25 states have internal predecessors, (70), 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) [2024-08-27 10:25:31,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:25:31,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:26:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:26:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:26:01,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-08-27 10:26:01,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:26:01,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-27 10:26:01,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:26:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash 347706857, now seen corresponding path program 2 times [2024-08-27 10:26:01,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:26:01,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092313537] [2024-08-27 10:26:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:26:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:26:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:26:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-08-27 10:26:02,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:26:02,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092313537] [2024-08-27 10:26:02,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092313537] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-27 10:26:02,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892365016] [2024-08-27 10:26:02,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-08-27 10:26:02,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:26:02,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:26:02,233 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-27 10:26:02,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-08-27 10:26:02,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-08-27 10:26:02,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-08-27 10:26:02,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjunts are in the unsatisfiable core [2024-08-27 10:26:02,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-27 10:26:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-08-27 10:26:02,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-27 10:26:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-08-27 10:26:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892365016] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-27 10:26:02,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-27 10:26:02,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 7] total 18 [2024-08-27 10:26:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148274536] [2024-08-27 10:26:02,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-27 10:26:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-08-27 10:26:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:26:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-08-27 10:26:02,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-08-27 10:26:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:26:02,649 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:26:02,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 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) [2024-08-27 10:26:02,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:26:02,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:26:02,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:26:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:26:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:26:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-08-27 10:26:03,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-08-27 10:26:03,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:26:03,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-27 10:26:03,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:26:03,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1721720041, now seen corresponding path program 3 times [2024-08-27 10:26:03,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:26:03,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556928727] [2024-08-27 10:26:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:26:03,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:26:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:26:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-08-27 10:26:03,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:26:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556928727] [2024-08-27 10:26:03,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556928727] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-27 10:26:03,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-27 10:26:03,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-08-27 10:26:03,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458285918] [2024-08-27 10:26:03,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-27 10:26:04,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-08-27 10:26:04,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:26:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-08-27 10:26:04,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-08-27 10:26:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:26:04,003 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:26:04,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-08-27 10:26:04,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:26:04,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:26:04,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2024-08-27 10:26:04,003 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:26:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:26:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:26:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-08-27 10:26:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-08-27 10:26:04,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-08-27 10:26:04,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-27 10:26:04,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:26:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1266339359, now seen corresponding path program 4 times [2024-08-27 10:26:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:26:04,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793493820] [2024-08-27 10:26:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:26:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:26:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:26:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-08-27 10:26:06,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:26:06,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793493820] [2024-08-27 10:26:06,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793493820] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-27 10:26:06,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279484389] [2024-08-27 10:26:06,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-08-27 10:26:06,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:26:06,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:26:06,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-27 10:26:06,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-08-27 10:26:06,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-08-27 10:26:06,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-08-27 10:26:06,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 39 conjunts are in the unsatisfiable core [2024-08-27 10:26:06,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-27 10:26:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:26:08,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-27 10:26:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:26:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279484389] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-27 10:26:13,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-27 10:26:13,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 20] total 52 [2024-08-27 10:26:13,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385039560] [2024-08-27 10:26:13,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-27 10:26:13,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-08-27 10:26:13,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:26:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-08-27 10:26:13,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2292, Unknown=0, NotChecked=0, Total=2756 [2024-08-27 10:26:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:26:13,411 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:26:13,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.4716981132075473) internal successors, (131), 52 states have internal predecessors, (131), 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) [2024-08-27 10:26:13,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:26:13,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:26:13,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2024-08-27 10:26:13,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-08-27 10:26:13,412 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:26:18,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:26:21,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:26:22,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:26:27,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:26:30,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:27:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:27:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:27:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-08-27 10:27:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-08-27 10:27:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-08-27 10:27:21,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-08-27 10:27:21,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-08-27 10:27:21,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-27 10:27:21,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:27:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash 603809398, now seen corresponding path program 5 times [2024-08-27 10:27:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:27:21,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577924460] [2024-08-27 10:27:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:27:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:27:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:27:38,827 WARN L293 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:27:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 218 proven. 106 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-08-27 10:27:38,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:27:38,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577924460] [2024-08-27 10:27:38,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577924460] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-27 10:27:38,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841429077] [2024-08-27 10:27:38,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-08-27 10:27:38,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:27:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:27:38,847 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-27 10:27:38,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-08-27 10:27:39,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-08-27 10:27:39,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-08-27 10:27:39,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 23 conjunts are in the unsatisfiable core [2024-08-27 10:27:39,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-27 10:27:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 282 proven. 37 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-08-27 10:27:45,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-27 10:27:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 289 proven. 35 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-08-27 10:27:51,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841429077] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-27 10:27:51,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-27 10:27:51,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 16 [2024-08-27 10:27:51,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838578494] [2024-08-27 10:27:51,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-27 10:27:51,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-08-27 10:27:51,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:27:51,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-08-27 10:27:51,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=189, Unknown=3, NotChecked=0, Total=240 [2024-08-27 10:27:51,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:27:51,650 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:27:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 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) [2024-08-27 10:27:51,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:27:51,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:27:51,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2024-08-27 10:27:51,650 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-08-27 10:27:51,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 98 states. [2024-08-27 10:27:51,651 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:27:53,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:28:00,221 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 34 DAG size of output: 34 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:28:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:28:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:28:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-08-27 10:28:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-08-27 10:28:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-08-27 10:28:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-08-27 10:28:00,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-08-27 10:28:00,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:28:00,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-08-27 10:28:00,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 10:28:00,608 INFO L85 PathProgramCache]: Analyzing trace with hash 822163260, now seen corresponding path program 6 times [2024-08-27 10:28:00,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 10:28:00,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916633541] [2024-08-27 10:28:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 10:28:00,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 10:28:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 10:28:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:28:44,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 10:28:44,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916633541] [2024-08-27 10:28:44,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916633541] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-27 10:28:44,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94741012] [2024-08-27 10:28:44,899 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-08-27 10:28:44,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-27 10:28:44,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 10:28:44,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-27 10:28:44,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-08-27 10:28:45,409 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-08-27 10:28:45,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-08-27 10:28:45,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 84 conjunts are in the unsatisfiable core [2024-08-27 10:28:45,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-27 10:29:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:29:10,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-27 10:29:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 10:29:43,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94741012] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-27 10:29:43,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-27 10:29:43,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 47, 47] total 142 [2024-08-27 10:29:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033734087] [2024-08-27 10:29:43,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-27 10:29:43,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-08-27 10:29:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 10:29:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-08-27 10:29:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2614, Invalid=17685, Unknown=7, NotChecked=0, Total=20306 [2024-08-27 10:29:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:29:43,610 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 10:29:43,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.3216783216783217) internal successors, (332), 142 states have internal predecessors, (332), 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) [2024-08-27 10:29:43,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2024-08-27 10:29:43,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2024-08-27 10:29:43,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2024-08-27 10:29:43,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-08-27 10:29:43,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 98 states. [2024-08-27 10:29:43,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2024-08-27 10:29:43,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 10:30:25,226 WARN L293 SmtUtils]: Spent 10.56s on a formula simplification. DAG size of input: 439 DAG size of output: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:32:58,528 WARN L293 SmtUtils]: Spent 48.21s on a formula simplification. DAG size of input: 370 DAG size of output: 364 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:33:00,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:33:03,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:34:43,949 WARN L293 SmtUtils]: Spent 57.50s on a formula simplification. DAG size of input: 396 DAG size of output: 390 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:34:48,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:34:50,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:34:52,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:34:54,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:36:00,492 WARN L293 SmtUtils]: Spent 12.32s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:36:05,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:36:06,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:36:52,199 WARN L293 SmtUtils]: Spent 7.44s on a formula simplification that was a NOOP. DAG size: 265 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:36:54,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:36:55,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:36:56,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:36:59,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:37:01,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:37:03,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:37:33,504 WARN L293 SmtUtils]: Spent 10.32s on a formula simplification. DAG size of input: 335 DAG size of output: 136 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:37:34,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:37:36,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:37:38,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:37:41,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:38:29,513 WARN L293 SmtUtils]: Spent 13.59s on a formula simplification that was a NOOP. DAG size: 323 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-08-27 10:38:31,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:38:34,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:38:38,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:38:40,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-08-27 10:39:28,464 WARN L293 SmtUtils]: Spent 17.43s on a formula simplification. DAG size of input: 262 DAG size of output: 256 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15