./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:53:58,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:53:58,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:53:58,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:53:58,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:53:58,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:53:58,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:53:58,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:53:58,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:53:58,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:53:58,278 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:53:58,279 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:53:58,279 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:53:58,280 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:53:58,280 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:53:58,281 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:53:58,281 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:53:58,282 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:53:58,283 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:53:58,283 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:53:58,284 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:53:58,284 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:53:58,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:53:58,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:53:58,286 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:53:58,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:53:58,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:53:58,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:53:58,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:53:58,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:53:58,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:53:58,289 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:53:58,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:53:58,290 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:53:58,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:53:58,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:53:58,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:53:58,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:53:58,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:53:58,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:53:58,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:53:58,292 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:53:58,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:53:58,293 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:53:58,293 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:53:58,293 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:53:58,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:53:58,293 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2023-12-02 16:53:58,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:53:58,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:53:58,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:53:58,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:53:58,566 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:53:58,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-12-02 16:54:01,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:54:01,558 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:54:01,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-12-02 16:54:01,569 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/data/259b4f3ff/2a2d7a8c718b4dd6bd1cd97ec2269985/FLAGafa50f51b [2023-12-02 16:54:01,585 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/data/259b4f3ff/2a2d7a8c718b4dd6bd1cd97ec2269985 [2023-12-02 16:54:01,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:54:01,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:54:01,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:54:01,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:54:01,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:54:01,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:01,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a0d7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01, skipping insertion in model container [2023-12-02 16:54:01,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:01,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:54:01,836 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2023-12-02 16:54:01,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:54:01,857 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:54:01,888 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2023-12-02 16:54:01,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:54:01,902 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:54:01,903 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:54:01,911 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:54:01,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01 WrapperNode [2023-12-02 16:54:01,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:54:01,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:54:01,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:54:01,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:54:01,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:01,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:01,964 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 333 [2023-12-02 16:54:01,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:54:01,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:54:01,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:54:01,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:54:01,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:01,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:01,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:01,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:01,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:02,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:02,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:02,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:02,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:54:02,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:54:02,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:54:02,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:54:02,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (1/1) ... [2023-12-02 16:54:02,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:54:02,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:54:02,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:54:02,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:54:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:54:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:54:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:54:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:54:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 16:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 16:54:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 16:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 16:54:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 16:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 16:54:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:54:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 16:54:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 16:54:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:54:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:54:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:54:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:54:02,091 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 16:54:02,209 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:54:02,211 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:54:02,698 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:54:03,042 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:54:03,043 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-02 16:54:03,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:54:03 BoogieIcfgContainer [2023-12-02 16:54:03,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:54:03,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:54:03,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:54:03,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:54:03,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:54:01" (1/3) ... [2023-12-02 16:54:03,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f03db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:54:03, skipping insertion in model container [2023-12-02 16:54:03,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:54:01" (2/3) ... [2023-12-02 16:54:03,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f03db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:54:03, skipping insertion in model container [2023-12-02 16:54:03,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:54:03" (3/3) ... [2023-12-02 16:54:03,051 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-12-02 16:54:03,059 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 16:54:03,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:54:03,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:54:03,068 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 16:54:03,127 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-02 16:54:03,153 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 56 transitions, 133 flow [2023-12-02 16:54:03,260 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1904 states, 1903 states have (on average 3.7630057803468207) internal successors, (7161), 1903 states have internal predecessors, (7161), 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) [2023-12-02 16:54:03,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:54:03,285 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@4e695bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:54:03,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-02 16:54:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 1904 states, 1903 states have (on average 3.7630057803468207) internal successors, (7161), 1903 states have internal predecessors, (7161), 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) [2023-12-02 16:54:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 16:54:03,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:03,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:03,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:03,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:03,342 INFO L85 PathProgramCache]: Analyzing trace with hash 490486581, now seen corresponding path program 1 times [2023-12-02 16:54:03,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:03,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689805278] [2023-12-02 16:54:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:03,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689805278] [2023-12-02 16:54:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689805278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:03,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:03,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:54:03,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282797165] [2023-12-02 16:54:03,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:03,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:54:03,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:54:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:54:03,690 INFO L87 Difference]: Start difference. First operand has 1904 states, 1903 states have (on average 3.7630057803468207) internal successors, (7161), 1903 states have internal predecessors, (7161), 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) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2023-12-02 16:54:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:03,828 INFO L93 Difference]: Finished difference Result 1904 states and 6719 transitions. [2023-12-02 16:54:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:54:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) Word has length 27 [2023-12-02 16:54:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:03,866 INFO L225 Difference]: With dead ends: 1904 [2023-12-02 16:54:03,866 INFO L226 Difference]: Without dead ends: 1904 [2023-12-02 16:54:03,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:54:03,872 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:03,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:54:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2023-12-02 16:54:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1904. [2023-12-02 16:54:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 3.5307409353652126) internal successors, (6719), 1903 states have internal predecessors, (6719), 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) [2023-12-02 16:54:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 6719 transitions. [2023-12-02 16:54:04,017 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 6719 transitions. Word has length 27 [2023-12-02 16:54:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:04,017 INFO L495 AbstractCegarLoop]: Abstraction has 1904 states and 6719 transitions. [2023-12-02 16:54:04,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2023-12-02 16:54:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 6719 transitions. [2023-12-02 16:54:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 16:54:04,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:04,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:04,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:54:04,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:04,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:04,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1241051611, now seen corresponding path program 1 times [2023-12-02 16:54:04,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:04,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064791184] [2023-12-02 16:54:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:04,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:04,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064791184] [2023-12-02 16:54:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064791184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:04,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:54:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24434444] [2023-12-02 16:54:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:54:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:04,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:54:04,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:04,203 INFO L87 Difference]: Start difference. First operand 1904 states and 6719 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-12-02 16:54:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:04,372 INFO L93 Difference]: Finished difference Result 3655 states and 12928 transitions. [2023-12-02 16:54:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:54:04,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) Word has length 35 [2023-12-02 16:54:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:04,405 INFO L225 Difference]: With dead ends: 3655 [2023-12-02 16:54:04,405 INFO L226 Difference]: Without dead ends: 3072 [2023-12-02 16:54:04,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:04,407 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:04,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:54:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2023-12-02 16:54:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2926. [2023-12-02 16:54:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2925 states have (on average 3.5935042735042737) internal successors, (10511), 2925 states have internal predecessors, (10511), 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) [2023-12-02 16:54:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 10511 transitions. [2023-12-02 16:54:04,554 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 10511 transitions. Word has length 35 [2023-12-02 16:54:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:04,554 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 10511 transitions. [2023-12-02 16:54:04,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-12-02 16:54:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 10511 transitions. [2023-12-02 16:54:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 16:54:04,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:04,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:04,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:54:04,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:04,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1153375103, now seen corresponding path program 1 times [2023-12-02 16:54:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731461656] [2023-12-02 16:54:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:04,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:04,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731461656] [2023-12-02 16:54:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731461656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:04,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:54:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779445919] [2023-12-02 16:54:04,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:04,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:54:04,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:54:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:04,739 INFO L87 Difference]: Start difference. First operand 2926 states and 10511 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-12-02 16:54:04,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:04,869 INFO L93 Difference]: Finished difference Result 3732 states and 13215 transitions. [2023-12-02 16:54:04,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:54:04,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) Word has length 42 [2023-12-02 16:54:04,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:04,909 INFO L225 Difference]: With dead ends: 3732 [2023-12-02 16:54:04,909 INFO L226 Difference]: Without dead ends: 3732 [2023-12-02 16:54:04,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:04,911 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:04,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:54:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2023-12-02 16:54:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3732. [2023-12-02 16:54:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3731 states have (on average 3.54194585901903) internal successors, (13215), 3731 states have internal predecessors, (13215), 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) [2023-12-02 16:54:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 13215 transitions. [2023-12-02 16:54:05,099 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 13215 transitions. Word has length 42 [2023-12-02 16:54:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:05,100 INFO L495 AbstractCegarLoop]: Abstraction has 3732 states and 13215 transitions. [2023-12-02 16:54:05,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-12-02 16:54:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 13215 transitions. [2023-12-02 16:54:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 16:54:05,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:05,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:05,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:54:05,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:05,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash 421680273, now seen corresponding path program 2 times [2023-12-02 16:54:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:05,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449329901] [2023-12-02 16:54:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:05,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:05,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:05,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449329901] [2023-12-02 16:54:05,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449329901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:05,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:54:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450513209] [2023-12-02 16:54:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:05,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:54:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:05,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:54:05,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:05,253 INFO L87 Difference]: Start difference. First operand 3732 states and 13215 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-12-02 16:54:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:05,439 INFO L93 Difference]: Finished difference Result 3482 states and 12104 transitions. [2023-12-02 16:54:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:54:05,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) Word has length 42 [2023-12-02 16:54:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:05,478 INFO L225 Difference]: With dead ends: 3482 [2023-12-02 16:54:05,478 INFO L226 Difference]: Without dead ends: 3482 [2023-12-02 16:54:05,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:05,480 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:05,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:54:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2023-12-02 16:54:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3482. [2023-12-02 16:54:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3481 states have (on average 3.477161735133582) internal successors, (12104), 3481 states have internal predecessors, (12104), 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) [2023-12-02 16:54:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 12104 transitions. [2023-12-02 16:54:05,635 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 12104 transitions. Word has length 42 [2023-12-02 16:54:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:05,636 INFO L495 AbstractCegarLoop]: Abstraction has 3482 states and 12104 transitions. [2023-12-02 16:54:05,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-12-02 16:54:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 12104 transitions. [2023-12-02 16:54:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 16:54:05,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:05,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:05,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:54:05,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:05,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:05,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1970995247, now seen corresponding path program 3 times [2023-12-02 16:54:05,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:05,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255190231] [2023-12-02 16:54:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:05,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:54:05,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255190231] [2023-12-02 16:54:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255190231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:05,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:05,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:54:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070489670] [2023-12-02 16:54:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:05,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:54:05,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:54:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:05,748 INFO L87 Difference]: Start difference. First operand 3482 states and 12104 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-12-02 16:54:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:05,872 INFO L93 Difference]: Finished difference Result 4122 states and 14230 transitions. [2023-12-02 16:54:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:54:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) Word has length 42 [2023-12-02 16:54:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:05,902 INFO L225 Difference]: With dead ends: 4122 [2023-12-02 16:54:05,902 INFO L226 Difference]: Without dead ends: 4122 [2023-12-02 16:54:05,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:54:05,904 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:05,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 33 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:54:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2023-12-02 16:54:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3776. [2023-12-02 16:54:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3775 states have (on average 3.4656953642384107) internal successors, (13083), 3775 states have internal predecessors, (13083), 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) [2023-12-02 16:54:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 13083 transitions. [2023-12-02 16:54:06,045 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 13083 transitions. Word has length 42 [2023-12-02 16:54:06,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:06,045 INFO L495 AbstractCegarLoop]: Abstraction has 3776 states and 13083 transitions. [2023-12-02 16:54:06,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-12-02 16:54:06,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 13083 transitions. [2023-12-02 16:54:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 16:54:06,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:06,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:06,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:54:06,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:06,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash 298112666, now seen corresponding path program 1 times [2023-12-02 16:54:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:06,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38041450] [2023-12-02 16:54:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 16:54:06,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38041450] [2023-12-02 16:54:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38041450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:06,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:06,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:54:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520870307] [2023-12-02 16:54:06,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:06,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:54:06,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:54:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:54:06,243 INFO L87 Difference]: Start difference. First operand 3776 states and 13083 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2023-12-02 16:54:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:06,386 INFO L93 Difference]: Finished difference Result 3834 states and 13210 transitions. [2023-12-02 16:54:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:54:06,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) Word has length 48 [2023-12-02 16:54:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:06,403 INFO L225 Difference]: With dead ends: 3834 [2023-12-02 16:54:06,403 INFO L226 Difference]: Without dead ends: 3777 [2023-12-02 16:54:06,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:54:06,405 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:06,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:54:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2023-12-02 16:54:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3777. [2023-12-02 16:54:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3777 states, 3776 states have (on average 3.465042372881356) internal successors, (13084), 3776 states have internal predecessors, (13084), 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) [2023-12-02 16:54:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3777 states to 3777 states and 13084 transitions. [2023-12-02 16:54:06,538 INFO L78 Accepts]: Start accepts. Automaton has 3777 states and 13084 transitions. Word has length 48 [2023-12-02 16:54:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:06,539 INFO L495 AbstractCegarLoop]: Abstraction has 3777 states and 13084 transitions. [2023-12-02 16:54:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2023-12-02 16:54:06,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3777 states and 13084 transitions. [2023-12-02 16:54:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 16:54:06,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:06,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:06,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:54:06,551 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:06,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1080108774, now seen corresponding path program 1 times [2023-12-02 16:54:06,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:06,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706328105] [2023-12-02 16:54:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:06,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 16:54:06,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:06,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706328105] [2023-12-02 16:54:06,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706328105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:06,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:06,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:54:06,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211430397] [2023-12-02 16:54:06,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:06,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:54:06,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:54:06,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:54:06,770 INFO L87 Difference]: Start difference. First operand 3777 states and 13084 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2023-12-02 16:54:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:06,958 INFO L93 Difference]: Finished difference Result 4901 states and 16445 transitions. [2023-12-02 16:54:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:54:06,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) Word has length 49 [2023-12-02 16:54:06,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:06,971 INFO L225 Difference]: With dead ends: 4901 [2023-12-02 16:54:06,971 INFO L226 Difference]: Without dead ends: 3778 [2023-12-02 16:54:06,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:54:06,973 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:06,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:54:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2023-12-02 16:54:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3778. [2023-12-02 16:54:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3778 states, 3777 states have (on average 3.4643897272967963) internal successors, (13085), 3777 states have internal predecessors, (13085), 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) [2023-12-02 16:54:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3778 states to 3778 states and 13085 transitions. [2023-12-02 16:54:07,071 INFO L78 Accepts]: Start accepts. Automaton has 3778 states and 13085 transitions. Word has length 49 [2023-12-02 16:54:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:07,072 INFO L495 AbstractCegarLoop]: Abstraction has 3778 states and 13085 transitions. [2023-12-02 16:54:07,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2023-12-02 16:54:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3778 states and 13085 transitions. [2023-12-02 16:54:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 16:54:07,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:07,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:07,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:54:07,082 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:07,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash 432081246, now seen corresponding path program 1 times [2023-12-02 16:54:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:07,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332050502] [2023-12-02 16:54:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:07,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:54:07,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332050502] [2023-12-02 16:54:07,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332050502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:54:07,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:54:07,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:54:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4541852] [2023-12-02 16:54:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:54:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:54:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:54:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:54:07,274 INFO L87 Difference]: Start difference. First operand 3778 states and 13085 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-12-02 16:54:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:07,426 INFO L93 Difference]: Finished difference Result 4846 states and 16481 transitions. [2023-12-02 16:54:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:54:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) Word has length 50 [2023-12-02 16:54:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:07,446 INFO L225 Difference]: With dead ends: 4846 [2023-12-02 16:54:07,446 INFO L226 Difference]: Without dead ends: 3779 [2023-12-02 16:54:07,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:54:07,447 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:07,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 42 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:54:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2023-12-02 16:54:07,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3779. [2023-12-02 16:54:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3778 states have (on average 3.463737427210164) internal successors, (13086), 3778 states have internal predecessors, (13086), 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) [2023-12-02 16:54:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 13086 transitions. [2023-12-02 16:54:07,596 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 13086 transitions. Word has length 50 [2023-12-02 16:54:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:07,596 INFO L495 AbstractCegarLoop]: Abstraction has 3779 states and 13086 transitions. [2023-12-02 16:54:07,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2023-12-02 16:54:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 13086 transitions. [2023-12-02 16:54:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 16:54:07,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:07,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:07,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:54:07,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:07,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1818064358, now seen corresponding path program 1 times [2023-12-02 16:54:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434136775] [2023-12-02 16:54:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 16:54:07,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:07,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434136775] [2023-12-02 16:54:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434136775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:54:07,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621888783] [2023-12-02 16:54:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:07,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:54:07,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:54:07,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:54:08,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:54:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:08,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:54:08,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:54:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 16:54:08,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:54:08,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2023-12-02 16:54:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 16:54:08,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621888783] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:54:08,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1955787476] [2023-12-02 16:54:08,819 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 16:54:08,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:54:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-12-02 16:54:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959417950] [2023-12-02 16:54:08,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:54:08,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 16:54:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:08,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 16:54:08,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:54:08,824 INFO L87 Difference]: Start difference. First operand 3779 states and 13086 transitions. Second operand has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 14 states have internal predecessors, (113), 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) [2023-12-02 16:54:09,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:54:09,179 INFO L93 Difference]: Finished difference Result 5027 states and 16776 transitions. [2023-12-02 16:54:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:54:09,180 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 14 states have internal predecessors, (113), 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) Word has length 51 [2023-12-02 16:54:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:54:09,200 INFO L225 Difference]: With dead ends: 5027 [2023-12-02 16:54:09,200 INFO L226 Difference]: Without dead ends: 3780 [2023-12-02 16:54:09,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-02 16:54:09,201 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:54:09,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 137 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:54:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2023-12-02 16:54:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 3780. [2023-12-02 16:54:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3779 states have (on average 3.463085472347182) internal successors, (13087), 3779 states have internal predecessors, (13087), 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) [2023-12-02 16:54:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 13087 transitions. [2023-12-02 16:54:09,352 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 13087 transitions. Word has length 51 [2023-12-02 16:54:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:54:09,352 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 13087 transitions. [2023-12-02 16:54:09,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 14 states have internal predecessors, (113), 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) [2023-12-02 16:54:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 13087 transitions. [2023-12-02 16:54:09,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 16:54:09,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:54:09,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:54:09,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:54:09,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:54:09,583 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-02 16:54:09,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:54:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1933463014, now seen corresponding path program 2 times [2023-12-02 16:54:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:54:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927533087] [2023-12-02 16:54:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:54:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:54:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:54:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 16:54:09,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:54:09,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927533087] [2023-12-02 16:54:09,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927533087] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:54:09,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124095182] [2023-12-02 16:54:09,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:54:09,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:54:09,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:54:09,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:54:09,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:54:10,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 16:54:10,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:54:10,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-02 16:54:10,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:54:11,395 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:54:11,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:54:11,398 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:54:11,423 INFO L349 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2023-12-02 16:54:11,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 26 [2023-12-02 16:54:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:54:11,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:54:12,428 INFO L349 Elim1Store]: treesize reduction 20, result has 86.4 percent of original size [2023-12-02 16:54:12,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 142 [2023-12-02 16:54:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:54:13,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124095182] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:54:13,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [811476963] [2023-12-02 16:54:13,950 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 16:54:13,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:54:13,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 15] total 34 [2023-12-02 16:54:13,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993355488] [2023-12-02 16:54:13,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:54:13,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 16:54:13,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:54:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 16:54:13,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 16:54:13,977 INFO L87 Difference]: Start difference. First operand 3780 states and 13087 transitions. Second operand has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 34 states have internal predecessors, (136), 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) [2023-12-02 16:55:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:55:17,652 INFO L93 Difference]: Finished difference Result 46661 states and 163516 transitions. [2023-12-02 16:55:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 343 states. [2023-12-02 16:55:17,653 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 34 states have internal predecessors, (136), 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) Word has length 52 [2023-12-02 16:55:17,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:55:17,653 INFO L225 Difference]: With dead ends: 46661 [2023-12-02 16:55:17,654 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 16:55:17,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54888 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=18967, Invalid=119789, Unknown=0, NotChecked=0, Total=138756 [2023-12-02 16:55:17,676 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1346 mSDsluCounter, 3814 mSDsCounter, 0 mSdLazyCounter, 9232 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3933 SdHoareTripleChecker+Invalid, 9409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 9232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:55:17,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 3933 Invalid, 9409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [177 Valid, 9232 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-02 16:55:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 16:55:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 16:55:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-12-02 16:55:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 16:55:17,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2023-12-02 16:55:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:55:17,678 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 16:55:17,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 34 states have internal predecessors, (136), 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) [2023-12-02 16:55:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 16:55:17,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 16:55:17,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-02 16:55:17,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-12-02 16:55:17,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-02 16:55:17,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-12-02 16:55:17,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:55:17,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:55:17,884 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2023-12-02 16:55:17,886 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 16:55:17,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:55:17,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:55:17 BasicIcfg [2023-12-02 16:55:17,889 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:55:17,889 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:55:17,889 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:55:17,890 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:55:17,890 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:54:03" (3/4) ... [2023-12-02 16:55:17,892 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 16:55:17,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-12-02 16:55:17,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-12-02 16:55:17,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-12-02 16:55:17,902 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 194 nodes and edges [2023-12-02 16:55:17,903 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2023-12-02 16:55:17,904 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-12-02 16:55:17,904 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 16:55:18,013 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:55:18,013 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 16:55:18,013 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:55:18,014 INFO L158 Benchmark]: Toolchain (without parser) took 76425.81ms. Allocated memory was 144.7MB in the beginning and 962.6MB in the end (delta: 817.9MB). Free memory was 106.3MB in the beginning and 493.5MB in the end (delta: -387.2MB). Peak memory consumption was 433.8MB. Max. memory is 16.1GB. [2023-12-02 16:55:18,015 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:55:18,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.97ms. Allocated memory is still 144.7MB. Free memory was 106.3MB in the beginning and 93.2MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 16:55:18,015 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.83ms. Allocated memory is still 144.7MB. Free memory was 93.2MB in the beginning and 90.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:55:18,016 INFO L158 Benchmark]: Boogie Preprocessor took 47.92ms. Allocated memory is still 144.7MB. Free memory was 90.7MB in the beginning and 88.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:55:18,016 INFO L158 Benchmark]: RCFGBuilder took 1029.80ms. Allocated memory is still 144.7MB. Free memory was 88.3MB in the beginning and 95.0MB in the end (delta: -6.7MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2023-12-02 16:55:18,016 INFO L158 Benchmark]: TraceAbstraction took 74843.71ms. Allocated memory was 144.7MB in the beginning and 962.6MB in the end (delta: 817.9MB). Free memory was 93.9MB in the beginning and 500.8MB in the end (delta: -406.9MB). Peak memory consumption was 413.1MB. Max. memory is 16.1GB. [2023-12-02 16:55:18,017 INFO L158 Benchmark]: Witness Printer took 124.26ms. Allocated memory is still 962.6MB. Free memory was 500.8MB in the beginning and 493.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 16:55:18,019 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.97ms. Allocated memory is still 144.7MB. Free memory was 106.3MB in the beginning and 93.2MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.83ms. Allocated memory is still 144.7MB. Free memory was 93.2MB in the beginning and 90.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.92ms. Allocated memory is still 144.7MB. Free memory was 90.7MB in the beginning and 88.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1029.80ms. Allocated memory is still 144.7MB. Free memory was 88.3MB in the beginning and 95.0MB in the end (delta: -6.7MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * TraceAbstraction took 74843.71ms. Allocated memory was 144.7MB in the beginning and 962.6MB in the end (delta: 817.9MB). Free memory was 93.9MB in the beginning and 500.8MB in the end (delta: -406.9MB). Peak memory consumption was 413.1MB. Max. memory is 16.1GB. * Witness Printer took 124.26ms. Allocated memory is still 962.6MB. Free memory was 500.8MB in the beginning and 493.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 156]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 78 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 74.7s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.2s, AutomataDifference: 65.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1507 SdHoareTripleChecker+Valid, 15.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1507 mSDsluCounter, 4326 SdHoareTripleChecker+Invalid, 14.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4068 mSDsCounter, 192 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10237 IncrementalHoareTripleChecker+Invalid, 10429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 192 mSolverCounterUnsat, 258 mSDtfsCounter, 10237 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 582 GetRequests, 182 SyntacticMatches, 3 SemanticMatches, 397 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54954 ImplicationChecksByTransitivity, 48.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3780occurred in iteration=9, InterpolantAutomatonStates: 379, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 492 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 541 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 630 ConstructedInterpolants, 14 QuantifiedInterpolants, 4218 SizeOfPredicates, 24 NumberOfNonLiveVariables, 689 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 63/93 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 16:55:18,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0514ddae-df6a-4aad-89c8-e1d3a0be1e55/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE