./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:56:01,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:56:01,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:56:01,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:56:01,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:56:01,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:56:01,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:56:01,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:56:01,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:56:01,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:56:01,581 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:56:01,582 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:56:01,583 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:56:01,584 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:56:01,585 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:56:01,585 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:56:01,586 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:56:01,586 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:56:01,586 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:56:01,587 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:56:01,588 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:56:01,589 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:56:01,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:56:01,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:56:01,593 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:56:01,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:56:01,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:56:01,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:56:01,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:56:01,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:56:01,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:56:01,596 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:56:01,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:56:01,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:56:01,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:56:01,597 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:56:01,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:56:01,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:56:01,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:01,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:56:01,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:56:01,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:56:01,619 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:56:01,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:56:01,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:56:01,620 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:56:01,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:56:01,620 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_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 [2023-11-12 00:56:01,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:56:01,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:56:01,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:56:01,905 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:56:01,906 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:56:01,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-11-12 00:56:05,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:56:05,780 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:56:05,781 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-11-12 00:56:05,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/data/77c8886bd/7e701499c1c64328bd4f76aee1f434cf/FLAGd36181e3e [2023-11-12 00:56:05,809 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/data/77c8886bd/7e701499c1c64328bd4f76aee1f434cf [2023-11-12 00:56:05,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:56:05,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:56:05,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:05,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:56:05,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:56:05,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:05" (1/1) ... [2023-11-12 00:56:05,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50745159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:05, skipping insertion in model container [2023-11-12 00:56:05,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:56:05" (1/1) ... [2023-11-12 00:56:05,857 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:56:06,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:06,112 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:56:06,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:56:06,152 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:06,152 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:56:06,159 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:56:06,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06 WrapperNode [2023-11-12 00:56:06,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:56:06,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:06,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:56:06,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:56:06,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,214 INFO L138 Inliner]: procedures = 24, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 273 [2023-11-12 00:56:06,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:56:06,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:56:06,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:56:06,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:56:06,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:56:06,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:56:06,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:56:06,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:56:06,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (1/1) ... [2023-11-12 00:56:06,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:56:06,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:56:06,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:56:06,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b65c70-1ad4-46a2-b7a1-a416775dba60/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:56:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:56:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:56:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:56:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:56:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:56:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:56:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:56:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 00:56:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 00:56:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:56:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-12 00:56:06,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-12 00:56:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:56:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:56:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:56:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:56:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:56:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:56:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:56:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:56:06,348 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:56:06,474 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:56:06,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:56:06,871 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:56:07,088 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:56:07,088 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:56:07,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:07 BoogieIcfgContainer [2023-11-12 00:56:07,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:56:07,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:56:07,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:56:07,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:56:07,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:56:05" (1/3) ... [2023-11-12 00:56:07,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190718b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:07, skipping insertion in model container [2023-11-12 00:56:07,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:56:06" (2/3) ... [2023-11-12 00:56:07,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190718b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:56:07, skipping insertion in model container [2023-11-12 00:56:07,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:56:07" (3/3) ... [2023-11-12 00:56:07,104 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-11-12 00:56:07,111 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 00:56:07,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:56:07,119 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-12 00:56:07,120 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:56:07,283 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-12 00:56:07,322 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:56:07,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 197 transitions, 429 flow [2023-11-12 00:56:07,349 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 197 transitions, 429 flow [2023-11-12 00:56:07,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 197 transitions, 429 flow [2023-11-12 00:56:07,459 INFO L124 PetriNetUnfolderBase]: 2/192 cut-off events. [2023-11-12 00:56:07,460 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-12 00:56:07,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 192 events. 2/192 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2023-11-12 00:56:07,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 4872 [2023-11-12 00:56:20,471 INFO L134 LiptonReduction]: Checked pairs total: 21476 [2023-11-12 00:56:20,472 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-11-12 00:56:20,482 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 62 transitions, 159 flow [2023-11-12 00:56:26,320 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93610 states, 90486 states have (on average 4.946544216784917) internal successors, (447593), 93609 states have internal predecessors, (447593), 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) [2023-11-12 00:56:26,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:56:26,365 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35ec7786, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:56:26,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-11-12 00:56:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 93610 states, 90486 states have (on average 4.946544216784917) internal successors, (447593), 93609 states have internal predecessors, (447593), 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) [2023-11-12 00:56:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:56:26,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:26,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:56:26,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-12 00:56:26,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash 855298, now seen corresponding path program 1 times [2023-11-12 00:56:26,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:26,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734113271] [2023-11-12 00:56:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:26,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:27,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:27,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734113271] [2023-11-12 00:56:27,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734113271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:27,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:27,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:56:27,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829123621] [2023-11-12 00:56:27,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:27,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:27,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:27,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:27,897 INFO L87 Difference]: Start difference. First operand has 93610 states, 90486 states have (on average 4.946544216784917) internal successors, (447593), 93609 states have internal predecessors, (447593), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-12 00:56:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:31,776 INFO L93 Difference]: Finished difference Result 92894 states and 443867 transitions. [2023-11-12 00:56:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:56:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-12 00:56:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:33,744 INFO L225 Difference]: With dead ends: 92894 [2023-11-12 00:56:33,744 INFO L226 Difference]: Without dead ends: 92894 [2023-11-12 00:56:33,745 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 [2023-11-12 00:56:33,750 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:33,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:56:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92894 states. [2023-11-12 00:56:39,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92894 to 92894. [2023-11-12 00:56:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92894 states, 89802 states have (on average 4.942729560588851) internal successors, (443867), 92893 states have internal predecessors, (443867), 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) [2023-11-12 00:56:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92894 states to 92894 states and 443867 transitions. [2023-11-12 00:56:42,204 INFO L78 Accepts]: Start accepts. Automaton has 92894 states and 443867 transitions. Word has length 3 [2023-11-12 00:56:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:42,206 INFO L495 AbstractCegarLoop]: Abstraction has 92894 states and 443867 transitions. [2023-11-12 00:56:42,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-12 00:56:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 92894 states and 443867 transitions. [2023-11-12 00:56:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:56:42,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:42,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:56:42,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:56:42,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-12 00:56:42,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash 821966574, now seen corresponding path program 1 times [2023-11-12 00:56:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:42,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213235740] [2023-11-12 00:56:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:42,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:42,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:42,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213235740] [2023-11-12 00:56:42,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213235740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:42,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:42,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:56:42,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941851612] [2023-11-12 00:56:42,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:42,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:56:42,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:42,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:56:42,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:56:42,468 INFO L87 Difference]: Start difference. First operand 92894 states and 443867 transitions. 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) [2023-11-12 00:56:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:56:43,377 INFO L93 Difference]: Finished difference Result 57450 states and 251789 transitions. [2023-11-12 00:56:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:56:43,380 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 [2023-11-12 00:56:43,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:56:44,640 INFO L225 Difference]: With dead ends: 57450 [2023-11-12 00:56:44,641 INFO L226 Difference]: Without dead ends: 57448 [2023-11-12 00:56:44,641 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 [2023-11-12 00:56:44,645 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:56:44,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:56:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57448 states. [2023-11-12 00:56:47,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57448 to 57448. [2023-11-12 00:56:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57448 states, 55138 states have (on average 4.5663244949036965) internal successors, (251778), 57447 states have internal predecessors, (251778), 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) [2023-11-12 00:56:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57448 states to 57448 states and 251778 transitions. [2023-11-12 00:56:47,935 INFO L78 Accepts]: Start accepts. Automaton has 57448 states and 251778 transitions. Word has length 5 [2023-11-12 00:56:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:56:47,936 INFO L495 AbstractCegarLoop]: Abstraction has 57448 states and 251778 transitions. [2023-11-12 00:56:47,936 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) [2023-11-12 00:56:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 57448 states and 251778 transitions. [2023-11-12 00:56:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:56:47,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:56:47,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:56:47,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:56:47,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-11-12 00:56:47,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:56:47,940 INFO L85 PathProgramCache]: Analyzing trace with hash -288761819, now seen corresponding path program 1 times [2023-11-12 00:56:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:56:47,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695571850] [2023-11-12 00:56:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:56:47,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:56:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:56:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:56:48,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:56:48,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695571850] [2023-11-12 00:56:48,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695571850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:56:48,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:56:48,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:56:48,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979370570] [2023-11-12 00:56:48,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:56:48,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:56:48,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:56:48,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:56:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:56:48,083 INFO L87 Difference]: Start difference. First operand 57448 states and 251778 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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)