./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 ad7a565ad4ebe037ce541fa36cdf85746d072cc2b5132ab8ae2e3025ff70fea5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:56:42,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:56:42,170 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:56:42,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:56:42,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:56:42,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:56:42,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:56:42,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:56:42,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:56:42,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:56:42,206 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:56:42,207 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:56:42,207 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:56:42,208 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:56:42,208 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:56:42,209 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:56:42,209 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:56:42,210 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:56:42,211 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:56:42,211 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:56:42,212 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:56:42,213 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:56:42,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:56:42,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:56:42,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:56:42,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:56:42,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:56:42,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:56:42,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:56:42,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:56:42,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:56:42,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:56:42,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:56:42,219 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:56:42,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:56:42,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:56:42,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:56:42,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:56:42,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:56:42,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:56:42,222 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:56:42,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:56:42,223 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:56:42,223 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:56:42,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:56:42,224 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_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad7a565ad4ebe037ce541fa36cdf85746d072cc2b5132ab8ae2e3025ff70fea5 [2023-11-06 20:56:42,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:56:42,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:56:42,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:56:42,530 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:56:42,530 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:56:42,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2023-11-06 20:56:45,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:56:45,917 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:56:45,918 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2023-11-06 20:56:45,948 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/data/dc77f6d1f/dae9c7497dcc40778c07a7cb9fff236d/FLAG3968a2133 [2023-11-06 20:56:45,963 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/data/dc77f6d1f/dae9c7497dcc40778c07a7cb9fff236d [2023-11-06 20:56:45,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:56:45,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:56:45,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:56:45,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:56:45,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:56:45,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:56:45" (1/1) ... [2023-11-06 20:56:45,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3a8cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:45, skipping insertion in model container [2023-11-06 20:56:45,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:56:45" (1/1) ... [2023-11-06 20:56:46,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:56:46,211 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_2d262dc7-0951-4448-8a41-9060e4e5df81/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] [2023-11-06 20:56:46,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:56:46,444 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:56:46,465 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_2d262dc7-0951-4448-8a41-9060e4e5df81/sv-benchmarks/c/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] [2023-11-06 20:56:46,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:56:46,598 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:56:46,599 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:56:46,607 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:56:46,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46 WrapperNode [2023-11-06 20:56:46,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:56:46,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:56:46,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:56:46,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:56:46,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,693 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-06 20:56:46,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:56:46,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:56:46,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:56:46,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:56:46,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,723 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:56:46,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:56:46,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:56:46,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:56:46,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (1/1) ... [2023-11-06 20:56:46,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:56:46,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:56:46,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:56:46,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:56:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:56:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:56:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:56:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:56:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:56:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 20:56:46,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 20:56:46,820 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 20:56:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 20:56:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 20:56:46,821 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 20:56:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:56:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:56:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:56:46,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:56:46,824 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:56:46,986 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:56:46,988 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:56:47,368 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:56:47,559 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:56:47,560 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:56:47,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:56:47 BoogieIcfgContainer [2023-11-06 20:56:47,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:56:47,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:56:47,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:56:47,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:56:47,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:56:45" (1/3) ... [2023-11-06 20:56:47,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2464a942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:56:47, skipping insertion in model container [2023-11-06 20:56:47,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:46" (2/3) ... [2023-11-06 20:56:47,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2464a942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:56:47, skipping insertion in model container [2023-11-06 20:56:47,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:56:47" (3/3) ... [2023-11-06 20:56:47,579 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.opt_pso.opt_rmo.opt.i [2023-11-06 20:56:47,591 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 20:56:47,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:56:47,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 20:56:47,601 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:56:47,700 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:56:47,750 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:56:47,781 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 110 transitions, 232 flow [2023-11-06 20:56:47,786 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 110 transitions, 232 flow [2023-11-06 20:56:47,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 110 transitions, 232 flow [2023-11-06 20:56:47,859 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-11-06 20:56:47,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 20:56:47,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-11-06 20:56:47,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 2082 [2023-11-06 20:56:54,181 INFO L134 LiptonReduction]: Checked pairs total: 5452 [2023-11-06 20:56:54,181 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-11-06 20:56:54,190 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 27 transitions, 66 flow [2023-11-06 20:56:54,265 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 722 states, 719 states have (on average 3.189151599443672) internal successors, (2293), 721 states have internal predecessors, (2293), 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) [2023-11-06 20:56:54,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:56:54,303 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=LoopsAndPotentialCycles, 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;@5d419cad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:56:54,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 20:56:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 722 states, 719 states have (on average 3.189151599443672) internal successors, (2293), 721 states have internal predecessors, (2293), 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) [2023-11-06 20:56:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:56:54,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:54,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:56:54,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:56:54,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash 462823328, now seen corresponding path program 1 times [2023-11-06 20:56:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:54,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495668926] [2023-11-06 20:56:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:56:54,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:54,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495668926] [2023-11-06 20:56:54,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495668926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:54,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:54,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 20:56:54,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223853642] [2023-11-06 20:56:54,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:54,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:56:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:56:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:56:54,885 INFO L87 Difference]: Start difference. First operand has 722 states, 719 states have (on average 3.189151599443672) internal successors, (2293), 721 states have internal predecessors, (2293), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-06 20:56:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:55,028 INFO L93 Difference]: Finished difference Result 587 states and 1790 transitions. [2023-11-06 20:56:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:56:55,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-06 20:56:55,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:55,054 INFO L225 Difference]: With dead ends: 587 [2023-11-06 20:56:55,054 INFO L226 Difference]: Without dead ends: 562 [2023-11-06 20:56:55,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:56:55,058 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:55,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:56:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-06 20:56:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-06 20:56:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 3.0748663101604277) internal successors, (1725), 561 states have internal predecessors, (1725), 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) [2023-11-06 20:56:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1725 transitions. [2023-11-06 20:56:55,150 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1725 transitions. Word has length 5 [2023-11-06 20:56:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:55,150 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 1725 transitions. [2023-11-06 20:56:55,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-06 20:56:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1725 transitions. [2023-11-06 20:56:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 20:56:55,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:55,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:55,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:56:55,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:56:55,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:55,154 INFO L85 PathProgramCache]: Analyzing trace with hash 560972592, now seen corresponding path program 1 times [2023-11-06 20:56:55,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:55,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009835147] [2023-11-06 20:56:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:55,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:56:55,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:55,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009835147] [2023-11-06 20:56:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009835147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:56:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479488753] [2023-11-06 20:56:55,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:56:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:56:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:56:55,996 INFO L87 Difference]: Start difference. First operand 562 states and 1725 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-06 20:56:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:56,138 INFO L93 Difference]: Finished difference Result 628 states and 1900 transitions. [2023-11-06 20:56:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:56:56,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-06 20:56:56,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:56,145 INFO L225 Difference]: With dead ends: 628 [2023-11-06 20:56:56,146 INFO L226 Difference]: Without dead ends: 628 [2023-11-06 20:56:56,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:56:56,149 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:56,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:56:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-11-06 20:56:56,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 547. [2023-11-06 20:56:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 2.990842490842491) internal successors, (1633), 546 states have internal predecessors, (1633), 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) [2023-11-06 20:56:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1633 transitions. [2023-11-06 20:56:56,198 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1633 transitions. Word has length 9 [2023-11-06 20:56:56,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:56,199 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 1633 transitions. [2023-11-06 20:56:56,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-06 20:56:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1633 transitions. [2023-11-06 20:56:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:56:56,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:56,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:56,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:56:56,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:56:56,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2072954133, now seen corresponding path program 1 times [2023-11-06 20:56:56,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276802954] [2023-11-06 20:56:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:56,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:56:56,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:56,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276802954] [2023-11-06 20:56:56,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276802954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:56,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:56,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:56:56,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20237704] [2023-11-06 20:56:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:56,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:56:56,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:56,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:56:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:56:56,813 INFO L87 Difference]: Start difference. First operand 547 states and 1633 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-06 20:56:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:57,002 INFO L93 Difference]: Finished difference Result 829 states and 2464 transitions. [2023-11-06 20:56:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:56:57,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-11-06 20:56:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:57,009 INFO L225 Difference]: With dead ends: 829 [2023-11-06 20:56:57,009 INFO L226 Difference]: Without dead ends: 587 [2023-11-06 20:56:57,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:56:57,011 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 55 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:57,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 6 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 20:56:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-11-06 20:56:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 519. [2023-11-06 20:56:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 2.9613899613899615) internal successors, (1534), 518 states have internal predecessors, (1534), 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) [2023-11-06 20:56:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1534 transitions. [2023-11-06 20:56:57,035 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1534 transitions. Word has length 11 [2023-11-06 20:56:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:57,036 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 1534 transitions. [2023-11-06 20:56:57,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-06 20:56:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1534 transitions. [2023-11-06 20:56:57,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:56:57,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:57,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:57,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:56:57,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:56:57,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:57,040 INFO L85 PathProgramCache]: Analyzing trace with hash 684125385, now seen corresponding path program 1 times [2023-11-06 20:56:57,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:57,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508953555] [2023-11-06 20:56:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:57,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:56:57,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:57,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508953555] [2023-11-06 20:56:57,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508953555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:57,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:57,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:56:57,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196159086] [2023-11-06 20:56:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:57,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:56:57,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:56:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:56:57,553 INFO L87 Difference]: Start difference. First operand 519 states and 1534 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 20:56:57,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:57,928 INFO L93 Difference]: Finished difference Result 1337 states and 3915 transitions. [2023-11-06 20:56:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:56:57,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2023-11-06 20:56:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:57,937 INFO L225 Difference]: With dead ends: 1337 [2023-11-06 20:56:57,937 INFO L226 Difference]: Without dead ends: 853 [2023-11-06 20:56:57,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:56:57,938 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 51 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:57,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 15 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 20:56:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-11-06 20:56:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 519. [2023-11-06 20:56:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 2.886100386100386) internal successors, (1495), 518 states have internal predecessors, (1495), 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) [2023-11-06 20:56:57,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1495 transitions. [2023-11-06 20:56:57,966 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1495 transitions. Word has length 12 [2023-11-06 20:56:57,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:57,966 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 1495 transitions. [2023-11-06 20:56:57,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 20:56:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1495 transitions. [2023-11-06 20:56:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:56:57,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:57,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:57,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:56:57,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:56:57,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash 163915105, now seen corresponding path program 2 times [2023-11-06 20:56:57,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:57,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990820800] [2023-11-06 20:56:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:57,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:56:58,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990820800] [2023-11-06 20:56:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990820800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:56:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549486157] [2023-11-06 20:56:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:56:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:58,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:56:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:56:58,471 INFO L87 Difference]: Start difference. First operand 519 states and 1495 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 20:56:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:58,777 INFO L93 Difference]: Finished difference Result 951 states and 2735 transitions. [2023-11-06 20:56:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:56:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2023-11-06 20:56:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:58,793 INFO L225 Difference]: With dead ends: 951 [2023-11-06 20:56:58,793 INFO L226 Difference]: Without dead ends: 595 [2023-11-06 20:56:58,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:56:58,794 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:58,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 14 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 20:56:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-11-06 20:56:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 407. [2023-11-06 20:56:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 2.7536945812807883) internal successors, (1118), 406 states have internal predecessors, (1118), 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) [2023-11-06 20:56:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1118 transitions. [2023-11-06 20:56:58,815 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1118 transitions. Word has length 12 [2023-11-06 20:56:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:58,815 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 1118 transitions. [2023-11-06 20:56:58,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-06 20:56:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1118 transitions. [2023-11-06 20:56:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:56:58,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:58,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:58,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:56:58,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:56:58,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 794415423, now seen corresponding path program 1 times [2023-11-06 20:56:58,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:58,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489927085] [2023-11-06 20:56:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:58,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:56:59,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489927085] [2023-11-06 20:56:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489927085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:59,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:59,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:56:59,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194904035] [2023-11-06 20:56:59,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:59,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:56:59,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:59,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:56:59,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:56:59,333 INFO L87 Difference]: Start difference. First operand 407 states and 1118 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 20:56:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:59,465 INFO L93 Difference]: Finished difference Result 669 states and 1871 transitions. [2023-11-06 20:56:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:56:59,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-06 20:56:59,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:59,470 INFO L225 Difference]: With dead ends: 669 [2023-11-06 20:56:59,470 INFO L226 Difference]: Without dead ends: 444 [2023-11-06 20:56:59,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:56:59,471 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:59,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 5 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:56:59,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-06 20:56:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 377. [2023-11-06 20:56:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.7606382978723403) internal successors, (1038), 376 states have internal predecessors, (1038), 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) [2023-11-06 20:56:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1038 transitions. [2023-11-06 20:56:59,487 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1038 transitions. Word has length 13 [2023-11-06 20:56:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:59,487 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 1038 transitions. [2023-11-06 20:56:59,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-06 20:56:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1038 transitions. [2023-11-06 20:56:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:56:59,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:59,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 20:56:59,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:56:59,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:59,490 INFO L85 PathProgramCache]: Analyzing trace with hash 976736343, now seen corresponding path program 2 times [2023-11-06 20:56:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:59,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750897471] [2023-11-06 20:56:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:56:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:56:59,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:56:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750897471] [2023-11-06 20:56:59,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750897471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:56:59,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:56:59,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:56:59,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465117675] [2023-11-06 20:56:59,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:56:59,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:56:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:56:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:56:59,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:56:59,683 INFO L87 Difference]: Start difference. First operand 377 states and 1038 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-06 20:56:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:56:59,758 INFO L93 Difference]: Finished difference Result 476 states and 1305 transitions. [2023-11-06 20:56:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:56:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-11-06 20:56:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:56:59,762 INFO L225 Difference]: With dead ends: 476 [2023-11-06 20:56:59,762 INFO L226 Difference]: Without dead ends: 212 [2023-11-06 20:56:59,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:56:59,763 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:56:59,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:56:59,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-06 20:56:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2023-11-06 20:56:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.706730769230769) internal successors, (563), 208 states have internal predecessors, (563), 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) [2023-11-06 20:56:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 563 transitions. [2023-11-06 20:56:59,773 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 563 transitions. Word has length 13 [2023-11-06 20:56:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:56:59,774 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 563 transitions. [2023-11-06 20:56:59,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2023-11-06 20:56:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 563 transitions. [2023-11-06 20:56:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:56:59,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:56:59,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:56:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 20:56:59,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:56:59,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:56:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1313652029, now seen corresponding path program 1 times [2023-11-06 20:56:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:56:59,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844917475] [2023-11-06 20:56:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:56:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:56:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:00,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844917475] [2023-11-06 20:57:00,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844917475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:00,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:00,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:57:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351554468] [2023-11-06 20:57:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:57:00,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:57:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:00,414 INFO L87 Difference]: Start difference. First operand 209 states and 563 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-06 20:57:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:00,500 INFO L93 Difference]: Finished difference Result 208 states and 559 transitions. [2023-11-06 20:57:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:57:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2023-11-06 20:57:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:00,503 INFO L225 Difference]: With dead ends: 208 [2023-11-06 20:57:00,503 INFO L226 Difference]: Without dead ends: 208 [2023-11-06 20:57:00,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:00,504 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:00,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-06 20:57:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-11-06 20:57:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.7004830917874396) internal successors, (559), 207 states have internal predecessors, (559), 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) [2023-11-06 20:57:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 559 transitions. [2023-11-06 20:57:00,515 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 559 transitions. Word has length 14 [2023-11-06 20:57:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:00,515 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 559 transitions. [2023-11-06 20:57:00,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-06 20:57:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 559 transitions. [2023-11-06 20:57:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 20:57:00,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:00,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:00,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 20:57:00,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:57:00,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2068472518, now seen corresponding path program 1 times [2023-11-06 20:57:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:00,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886662900] [2023-11-06 20:57:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:00,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:01,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:01,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:01,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886662900] [2023-11-06 20:57:01,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886662900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:01,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:01,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:57:01,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255700601] [2023-11-06 20:57:01,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:01,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 20:57:01,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 20:57:01,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:57:01,424 INFO L87 Difference]: Start difference. First operand 208 states and 559 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:01,544 INFO L93 Difference]: Finished difference Result 211 states and 567 transitions. [2023-11-06 20:57:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:57:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 20:57:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:01,547 INFO L225 Difference]: With dead ends: 211 [2023-11-06 20:57:01,547 INFO L226 Difference]: Without dead ends: 211 [2023-11-06 20:57:01,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:57:01,548 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:01,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-06 20:57:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2023-11-06 20:57:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 2.7) internal successors, (567), 210 states have internal predecessors, (567), 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) [2023-11-06 20:57:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 567 transitions. [2023-11-06 20:57:01,556 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 567 transitions. Word has length 15 [2023-11-06 20:57:01,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:01,557 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 567 transitions. [2023-11-06 20:57:01,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 567 transitions. [2023-11-06 20:57:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 20:57:01,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:01,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:01,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 20:57:01,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:57:01,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2068504851, now seen corresponding path program 1 times [2023-11-06 20:57:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:01,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991222699] [2023-11-06 20:57:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:01,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:01,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:01,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991222699] [2023-11-06 20:57:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991222699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:01,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:01,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:57:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303228688] [2023-11-06 20:57:01,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:01,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:57:01,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:01,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:57:01,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:57:01,783 INFO L87 Difference]: Start difference. First operand 211 states and 567 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:01,886 INFO L93 Difference]: Finished difference Result 211 states and 499 transitions. [2023-11-06 20:57:01,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:57:01,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 20:57:01,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:01,889 INFO L225 Difference]: With dead ends: 211 [2023-11-06 20:57:01,889 INFO L226 Difference]: Without dead ends: 156 [2023-11-06 20:57:01,889 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 [2023-11-06 20:57:01,890 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:01,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 13 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-06 20:57:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-11-06 20:57:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.3419354838709676) internal successors, (363), 155 states have internal predecessors, (363), 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) [2023-11-06 20:57:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 363 transitions. [2023-11-06 20:57:01,897 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 363 transitions. Word has length 15 [2023-11-06 20:57:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:01,898 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 363 transitions. [2023-11-06 20:57:01,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 363 transitions. [2023-11-06 20:57:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 20:57:01,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:01,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:01,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 20:57:01,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:57:01,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash -435860012, now seen corresponding path program 1 times [2023-11-06 20:57:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:01,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701502352] [2023-11-06 20:57:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:01,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:02,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701502352] [2023-11-06 20:57:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701502352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:02,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:02,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:57:02,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775838489] [2023-11-06 20:57:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:02,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:57:02,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:57:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:57:02,113 INFO L87 Difference]: Start difference. First operand 156 states and 363 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-06 20:57:02,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:02,243 INFO L93 Difference]: Finished difference Result 127 states and 259 transitions. [2023-11-06 20:57:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:57:02,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-11-06 20:57:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:02,245 INFO L225 Difference]: With dead ends: 127 [2023-11-06 20:57:02,245 INFO L226 Difference]: Without dead ends: 95 [2023-11-06 20:57:02,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:57:02,246 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:02,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 14 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-06 20:57:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-11-06 20:57:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.9456521739130435) internal successors, (179), 92 states have internal predecessors, (179), 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) [2023-11-06 20:57:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 179 transitions. [2023-11-06 20:57:02,250 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 179 transitions. Word has length 16 [2023-11-06 20:57:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:02,250 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 179 transitions. [2023-11-06 20:57:02,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-06 20:57:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 179 transitions. [2023-11-06 20:57:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 20:57:02,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:02,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:02,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 20:57:02,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:57:02,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:02,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1490774540, now seen corresponding path program 1 times [2023-11-06 20:57:02,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:02,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700162348] [2023-11-06 20:57:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:02,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:57:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:57:02,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:57:02,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700162348] [2023-11-06 20:57:02,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700162348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:57:02,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:57:02,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:57:02,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645600693] [2023-11-06 20:57:02,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:57:02,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 20:57:02,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:57:02,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 20:57:02,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:57:02,480 INFO L87 Difference]: Start difference. First operand 93 states and 179 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:02,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:57:02,612 INFO L93 Difference]: Finished difference Result 79 states and 149 transitions. [2023-11-06 20:57:02,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:57:02,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 20:57:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:57:02,614 INFO L225 Difference]: With dead ends: 79 [2023-11-06 20:57:02,614 INFO L226 Difference]: Without dead ends: 70 [2023-11-06 20:57:02,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 20:57:02,615 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:57:02,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 12 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:57:02,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-06 20:57:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-06 20:57:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 69 states have internal predecessors, (133), 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) [2023-11-06 20:57:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2023-11-06 20:57:02,618 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 18 [2023-11-06 20:57:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:57:02,618 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2023-11-06 20:57:02,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:57:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2023-11-06 20:57:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 20:57:02,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:57:02,620 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] [2023-11-06 20:57:02,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 20:57:02,620 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-06 20:57:02,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:57:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash 84337305, now seen corresponding path program 1 times [2023-11-06 20:57:02,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:57:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208451357] [2023-11-06 20:57:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:57:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:57:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:57:02,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 20:57:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:57:02,749 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 20:57:02,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 20:57:02,750 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-06 20:57:02,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-06 20:57:02,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-06 20:57:02,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-06 20:57:02,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-06 20:57:02,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-06 20:57:02,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 20:57:02,756 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:57:02,763 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 20:57:02,763 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:57:02,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:57:02 BasicIcfg [2023-11-06 20:57:02,839 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:57:02,840 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:57:02,840 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:57:02,840 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:57:02,841 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:56:47" (3/4) ... [2023-11-06 20:57:02,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 20:57:02,967 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 20:57:02,967 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:57:02,968 INFO L158 Benchmark]: Toolchain (without parser) took 17001.23ms. Allocated memory was 163.6MB in the beginning and 314.6MB in the end (delta: 151.0MB). Free memory was 121.3MB in the beginning and 146.7MB in the end (delta: -25.4MB). Peak memory consumption was 126.6MB. Max. memory is 16.1GB. [2023-11-06 20:57:02,968 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 111.1MB. Free memory was 79.6MB in the beginning and 79.5MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:57:02,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.53ms. Allocated memory is still 163.6MB. Free memory was 121.3MB in the beginning and 97.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 20:57:02,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.29ms. Allocated memory is still 163.6MB. Free memory was 97.7MB in the beginning and 95.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:57:02,970 INFO L158 Benchmark]: Boogie Preprocessor took 37.22ms. Allocated memory is still 163.6MB. Free memory was 95.1MB in the beginning and 93.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:57:02,971 INFO L158 Benchmark]: RCFGBuilder took 827.32ms. Allocated memory is still 163.6MB. Free memory was 93.0MB in the beginning and 54.7MB in the end (delta: 38.4MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-06 20:57:02,971 INFO L158 Benchmark]: TraceAbstraction took 15271.84ms. Allocated memory was 163.6MB in the beginning and 314.6MB in the end (delta: 151.0MB). Free memory was 53.7MB in the beginning and 155.1MB in the end (delta: -101.4MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2023-11-06 20:57:02,973 INFO L158 Benchmark]: Witness Printer took 127.50ms. Allocated memory is still 314.6MB. Free memory was 155.1MB in the beginning and 146.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 20:57:02,977 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 111.1MB. Free memory was 79.6MB in the beginning and 79.5MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.53ms. Allocated memory is still 163.6MB. Free memory was 121.3MB in the beginning and 97.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.29ms. Allocated memory is still 163.6MB. Free memory was 97.7MB in the beginning and 95.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.22ms. Allocated memory is still 163.6MB. Free memory was 95.1MB in the beginning and 93.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 827.32ms. Allocated memory is still 163.6MB. Free memory was 93.0MB in the beginning and 54.7MB in the end (delta: 38.4MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15271.84ms. Allocated memory was 163.6MB in the beginning and 314.6MB in the end (delta: 151.0MB). Free memory was 53.7MB in the beginning and 155.1MB in the end (delta: -101.4MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Witness Printer took 127.50ms. Allocated memory is still 314.6MB. Free memory was 155.1MB in the beginning and 146.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4s, 118 PlacesBefore, 36 PlacesAfterwards, 110 TransitionsBefore, 27 TransitionsAfterwards, 2082 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 97 TotalNumberOfCompositions, 5452 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2562, independent: 2384, independent conditional: 0, independent unconditional: 2384, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1472, independent: 1419, independent conditional: 0, independent unconditional: 1419, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1472, independent: 1392, independent conditional: 0, independent unconditional: 1392, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 80, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 624, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 566, dependent conditional: 0, dependent unconditional: 566, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2562, independent: 965, independent conditional: 0, independent unconditional: 965, dependent: 125, dependent conditional: 0, dependent unconditional: 125, unknown: 1472, unknown conditional: 0, unknown unconditional: 1472] , Statistics on independence cache: Total cache size (in pairs): 104, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L718] 0 _Bool x$flush_delayed; [L719] 0 int x$mem_tmp; [L720] 0 _Bool x$r_buff0_thd0; [L721] 0 _Bool x$r_buff0_thd1; [L722] 0 _Bool x$r_buff0_thd2; [L723] 0 _Bool x$r_buff0_thd3; [L724] 0 _Bool x$r_buff1_thd0; [L725] 0 _Bool x$r_buff1_thd1; [L726] 0 _Bool x$r_buff1_thd2; [L727] 0 _Bool x$r_buff1_thd3; [L728] 0 _Bool x$read_delayed; [L729] 0 int *x$read_delayed_var; [L730] 0 int x$w_buff0; [L731] 0 _Bool x$w_buff0_used; [L732] 0 int x$w_buff1; [L733] 0 _Bool x$w_buff1_used; [L735] 0 int y = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L818] 0 pthread_t t1876; [L819] FCALL, FORK 0 pthread_create(&t1876, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1876, ((void *)0), P0, ((void *)0))=-2, t1876={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L820] 0 pthread_t t1877; [L821] FCALL, FORK 0 pthread_create(&t1877, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1877, ((void *)0), P1, ((void *)0))=-1, t1876={5:0}, t1877={6:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L822] 0 pthread_t t1878; [L823] FCALL, FORK 0 pthread_create(&t1878, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1878, ((void *)0), P2, ((void *)0))=0, t1876={5:0}, t1877={6:0}, t1878={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L761] 2 x$w_buff1 = x$w_buff0 [L762] 2 x$w_buff0 = 2 [L763] 2 x$w_buff1_used = x$w_buff0_used [L764] 2 x$w_buff0_used = (_Bool)1 [L765] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L765] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L766] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L767] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L768] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L769] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L770] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L773] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L790] 3 __unbuffered_p2_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L793] 3 __unbuffered_p2_EBX = y VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L796] 3 x = x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L797] 3 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L798] 3 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L799] 3 x$r_buff0_thd3 = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L800] 3 x$r_buff1_thd3 = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L803] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L805] 3 return 0; [L741] 1 y = 2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=2] [L744] 1 x = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2] [L747] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L748] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L749] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L750] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L751] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2] [L754] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 1 return 0; [L776] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L777] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L778] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L779] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L780] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L825] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L827] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L827] RET 0 assume_abort_if_not(main$tmp_guard0) [L829] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L830] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L831] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L832] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L833] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1876={5:0}, t1877={6:0}, t1878={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L836] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L837] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L838] 0 x$flush_delayed = weak$$choice2 [L839] 0 x$mem_tmp = x [L840] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L841] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L842] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L843] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L844] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L845] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L846] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L847] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 1) [L848] 0 x = x$flush_delayed ? x$mem_tmp : x [L849] 0 x$flush_delayed = (_Bool)0 [L851] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 821]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 823]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 137 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 15.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 330 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 830 IncrementalHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 49 mSDtfsCounter, 830 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=722occurred in iteration=0, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 743 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 1329 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-06 20:57:03,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d262dc7-0951-4448-8a41-9060e4e5df81/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE