./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ --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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:15:33,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:15:33,141 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:15:33,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:15:33,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:15:33,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:15:33,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:15:33,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:15:33,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:15:33,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:15:33,177 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:15:33,178 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:15:33,178 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:15:33,179 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:15:33,180 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:15:33,180 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:15:33,181 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:15:33,182 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:15:33,182 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:15:33,183 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:15:33,184 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:15:33,185 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:15:33,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:15:33,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:15:33,187 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:15:33,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:15:33,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:15:33,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:15:33,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:15:33,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:15:33,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:15:33,192 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:15:33,192 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:15:33,193 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:15:33,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:15:33,194 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:15:33,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:15:33,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:15:33,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:15:33,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:15:33,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:15:33,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:15:33,198 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:15:33,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:15:33,198 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:15:33,199 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:15:33,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:15:33,200 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_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2023-11-19 04:15:33,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:15:33,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:15:33,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:15:33,480 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:15:33,480 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:15:33,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-19 04:15:36,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:15:37,001 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:15:37,002 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-19 04:15:37,017 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/data/1219f5da1/527917aa5d0541e9af32b6d738b152b6/FLAGe0a504c4c [2023-11-19 04:15:37,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/data/1219f5da1/527917aa5d0541e9af32b6d738b152b6 [2023-11-19 04:15:37,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:15:37,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:15:37,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:15:37,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:15:37,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:15:37,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fc7a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37, skipping insertion in model container [2023-11-19 04:15:37,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,084 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:15:37,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:15:37,319 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:15:37,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:15:37,355 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:15:37,355 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:15:37,364 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:15:37,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37 WrapperNode [2023-11-19 04:15:37,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:15:37,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:15:37,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:15:37,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:15:37,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,410 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2023-11-19 04:15:37,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:15:37,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:15:37,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:15:37,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:15:37,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:15:37,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:15:37,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:15:37,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:15:37,450 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (1/1) ... [2023-11-19 04:15:37,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:15:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:37,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:15:37,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:15:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:15:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 04:15:37,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 04:15:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 04:15:37,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 04:15:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 04:15:37,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 04:15:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:15:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:15:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:15:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 04:15:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 04:15:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:15:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:15:37,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:15:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:15:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:15:37,561 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:15:37,678 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:15:37,680 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:15:38,025 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:15:38,116 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:15:38,116 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 04:15:38,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:38 BoogieIcfgContainer [2023-11-19 04:15:38,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:15:38,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:15:38,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:15:38,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:15:38,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:15:37" (1/3) ... [2023-11-19 04:15:38,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6f567e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:38, skipping insertion in model container [2023-11-19 04:15:38,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:15:37" (2/3) ... [2023-11-19 04:15:38,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6f567e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:38, skipping insertion in model container [2023-11-19 04:15:38,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:38" (3/3) ... [2023-11-19 04:15:38,131 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-19 04:15:38,141 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:15:38,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:15:38,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 04:15:38,154 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:15:38,249 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 04:15:38,314 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:15:38,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 167 transitions, 355 flow [2023-11-19 04:15:38,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 167 transitions, 355 flow [2023-11-19 04:15:38,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 167 transitions, 355 flow [2023-11-19 04:15:38,435 INFO L124 PetriNetUnfolderBase]: 10/164 cut-off events. [2023-11-19 04:15:38,440 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 04:15:38,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 164 events. 10/164 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2023-11-19 04:15:38,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 1704 [2023-11-19 04:15:45,763 INFO L134 LiptonReduction]: Checked pairs total: 2291 [2023-11-19 04:15:45,764 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-11-19 04:15:45,772 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 31 transitions, 83 flow [2023-11-19 04:15:45,818 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 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) [2023-11-19 04:15:45,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:15:45,846 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;@5c55c08a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:15:45,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 04:15:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 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) [2023-11-19 04:15:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:15:45,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:45,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:15:45,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:45,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash 21106, now seen corresponding path program 1 times [2023-11-19 04:15:45,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:45,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302728636] [2023-11-19 04:15:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:45,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:46,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:46,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302728636] [2023-11-19 04:15:46,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302728636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:46,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:46,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:15:46,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690570697] [2023-11-19 04:15:46,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:46,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:46,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:46,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:46,264 INFO L87 Difference]: Start difference. First operand has 177 states, 166 states have (on average 3.0301204819277108) internal successors, (503), 176 states have internal predecessors, (503), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-19 04:15:46,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:46,376 INFO L93 Difference]: Finished difference Result 178 states and 505 transitions. [2023-11-19 04:15:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:46,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-19 04:15:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:46,391 INFO L225 Difference]: With dead ends: 178 [2023-11-19 04:15:46,392 INFO L226 Difference]: Without dead ends: 176 [2023-11-19 04:15:46,393 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 [2023-11-19 04:15:46,396 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:46,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-19 04:15:46,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-11-19 04:15:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 166 states have (on average 3.0120481927710845) internal successors, (500), 175 states have internal predecessors, (500), 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) [2023-11-19 04:15:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 500 transitions. [2023-11-19 04:15:46,453 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 500 transitions. Word has length 2 [2023-11-19 04:15:46,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:46,454 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 500 transitions. [2023-11-19 04:15:46,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-19 04:15:46,454 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 500 transitions. [2023-11-19 04:15:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:15:46,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:46,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:15:46,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:15:46,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:46,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash 654870, now seen corresponding path program 1 times [2023-11-19 04:15:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:46,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064799984] [2023-11-19 04:15:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:46,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:46,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064799984] [2023-11-19 04:15:46,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064799984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:46,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:46,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039982294] [2023-11-19 04:15:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:46,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:46,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:46,601 INFO L87 Difference]: Start difference. First operand 176 states and 500 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2023-11-19 04:15:46,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:46,648 INFO L93 Difference]: Finished difference Result 175 states and 499 transitions. [2023-11-19 04:15:46,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:46,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2023-11-19 04:15:46,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:46,651 INFO L225 Difference]: With dead ends: 175 [2023-11-19 04:15:46,651 INFO L226 Difference]: Without dead ends: 175 [2023-11-19 04:15:46,651 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 [2023-11-19 04:15:46,653 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:46,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:15:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-19 04:15:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-19 04:15:46,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 166 states have (on average 3.0060240963855422) internal successors, (499), 174 states have internal predecessors, (499), 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) [2023-11-19 04:15:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 499 transitions. [2023-11-19 04:15:46,671 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 499 transitions. Word has length 3 [2023-11-19 04:15:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:46,671 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 499 transitions. [2023-11-19 04:15:46,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2023-11-19 04:15:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 499 transitions. [2023-11-19 04:15:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:15:46,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:46,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:15:46,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:15:46,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:46,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 654871, now seen corresponding path program 1 times [2023-11-19 04:15:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:46,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173056500] [2023-11-19 04:15:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:46,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:46,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:46,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173056500] [2023-11-19 04:15:46,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173056500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:46,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747304205] [2023-11-19 04:15:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:46,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:46,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:46,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:46,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:15:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:46,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:15:46,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:46,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747304205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:46,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213388374] [2023-11-19 04:15:46,987 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:15:46,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:15:46,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 04:15:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59646901] [2023-11-19 04:15:46,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:46,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:15:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:15:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:15:46,992 INFO L87 Difference]: Start difference. First operand 175 states and 499 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:47,062 INFO L93 Difference]: Finished difference Result 178 states and 505 transitions. [2023-11-19 04:15:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:15:47,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:15:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:47,065 INFO L225 Difference]: With dead ends: 178 [2023-11-19 04:15:47,065 INFO L226 Difference]: Without dead ends: 178 [2023-11-19 04:15:47,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:15:47,067 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:47,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-19 04:15:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-11-19 04:15:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 169 states have (on average 2.9881656804733727) internal successors, (505), 177 states have internal predecessors, (505), 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) [2023-11-19 04:15:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 505 transitions. [2023-11-19 04:15:47,082 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 505 transitions. Word has length 3 [2023-11-19 04:15:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:47,082 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 505 transitions. [2023-11-19 04:15:47,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 505 transitions. [2023-11-19 04:15:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:15:47,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:47,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:15:47,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:47,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 04:15:47,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:47,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:47,302 INFO L85 PathProgramCache]: Analyzing trace with hash 629613449, now seen corresponding path program 1 times [2023-11-19 04:15:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539919490] [2023-11-19 04:15:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:47,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:47,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539919490] [2023-11-19 04:15:47,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539919490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:47,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:47,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:47,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321871904] [2023-11-19 04:15:47,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:47,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:47,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:47,405 INFO L87 Difference]: Start difference. First operand 178 states and 505 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-19 04:15:47,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:47,481 INFO L93 Difference]: Finished difference Result 210 states and 625 transitions. [2023-11-19 04:15:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:47,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2023-11-19 04:15:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:47,484 INFO L225 Difference]: With dead ends: 210 [2023-11-19 04:15:47,484 INFO L226 Difference]: Without dead ends: 210 [2023-11-19 04:15:47,485 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 [2023-11-19 04:15:47,486 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:47,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-19 04:15:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-11-19 04:15:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 201 states have (on average 3.109452736318408) internal successors, (625), 209 states have internal predecessors, (625), 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) [2023-11-19 04:15:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 625 transitions. [2023-11-19 04:15:47,503 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 625 transitions. Word has length 5 [2023-11-19 04:15:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:47,503 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 625 transitions. [2023-11-19 04:15:47,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-19 04:15:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 625 transitions. [2023-11-19 04:15:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:15:47,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:47,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:15:47,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:15:47,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:47,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:47,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1956818933, now seen corresponding path program 1 times [2023-11-19 04:15:47,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:47,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483407781] [2023-11-19 04:15:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:47,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:47,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:47,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483407781] [2023-11-19 04:15:47,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483407781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:47,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699683634] [2023-11-19 04:15:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:47,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:47,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:47,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:47,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:15:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:47,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:15:47,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:47,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:47,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699683634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:47,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:47,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-19 04:15:47,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753024895] [2023-11-19 04:15:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:47,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:47,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:47,693 INFO L87 Difference]: Start difference. First operand 210 states and 625 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2023-11-19 04:15:47,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:47,761 INFO L93 Difference]: Finished difference Result 210 states and 624 transitions. [2023-11-19 04:15:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:47,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) Word has length 6 [2023-11-19 04:15:47,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:47,764 INFO L225 Difference]: With dead ends: 210 [2023-11-19 04:15:47,766 INFO L226 Difference]: Without dead ends: 210 [2023-11-19 04:15:47,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:47,768 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:47,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-19 04:15:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-11-19 04:15:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 201 states have (on average 3.1044776119402986) internal successors, (624), 209 states have internal predecessors, (624), 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) [2023-11-19 04:15:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 624 transitions. [2023-11-19 04:15:47,781 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 624 transitions. Word has length 6 [2023-11-19 04:15:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:47,781 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 624 transitions. [2023-11-19 04:15:47,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 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) [2023-11-19 04:15:47,781 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 624 transitions. [2023-11-19 04:15:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:15:47,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:47,782 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2023-11-19 04:15:47,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:47,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:47,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:47,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1965024397, now seen corresponding path program 2 times [2023-11-19 04:15:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:47,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491578203] [2023-11-19 04:15:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:47,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:48,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:48,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491578203] [2023-11-19 04:15:48,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491578203] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680526999] [2023-11-19 04:15:48,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:15:48,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:48,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:48,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:48,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:15:48,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 04:15:48,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:15:48,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:15:48,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:15:48,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:48,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680526999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:48,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:48,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 04:15:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243855097] [2023-11-19 04:15:48,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:48,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:48,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:15:48,207 INFO L87 Difference]: Start difference. First operand 210 states and 624 transitions. 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) [2023-11-19 04:15:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:48,252 INFO L93 Difference]: Finished difference Result 209 states and 623 transitions. [2023-11-19 04:15:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:48,253 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 6 [2023-11-19 04:15:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:48,255 INFO L225 Difference]: With dead ends: 209 [2023-11-19 04:15:48,255 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 04:15:48,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:15:48,260 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:48,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:15:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 04:15:48,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2023-11-19 04:15:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 198 states have (on average 3.1161616161616164) internal successors, (617), 205 states have internal predecessors, (617), 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) [2023-11-19 04:15:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 617 transitions. [2023-11-19 04:15:48,272 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 617 transitions. Word has length 6 [2023-11-19 04:15:48,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:48,273 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 617 transitions. [2023-11-19 04:15:48,273 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) [2023-11-19 04:15:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 617 transitions. [2023-11-19 04:15:48,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:15:48,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:48,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:48,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:48,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 04:15:48,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:48,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:48,493 INFO L85 PathProgramCache]: Analyzing trace with hash -778008145, now seen corresponding path program 1 times [2023-11-19 04:15:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:48,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180511946] [2023-11-19 04:15:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:48,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:48,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:48,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180511946] [2023-11-19 04:15:48,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180511946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:48,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010610177] [2023-11-19 04:15:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:48,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:48,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:48,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:48,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:15:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:48,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:15:48,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:48,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:48,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010610177] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:48,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649261227] [2023-11-19 04:15:48,752 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:15:48,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:15:48,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 04:15:48,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457975237] [2023-11-19 04:15:48,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:48,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:15:48,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:15:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:15:48,755 INFO L87 Difference]: Start difference. First operand 206 states and 617 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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) [2023-11-19 04:15:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:48,941 INFO L93 Difference]: Finished difference Result 302 states and 1073 transitions. [2023-11-19 04:15:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:15:48,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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 7 [2023-11-19 04:15:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:48,945 INFO L225 Difference]: With dead ends: 302 [2023-11-19 04:15:48,945 INFO L226 Difference]: Without dead ends: 302 [2023-11-19 04:15:48,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:15:48,947 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:48,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:15:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-19 04:15:48,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-11-19 04:15:48,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 294 states have (on average 3.6496598639455784) internal successors, (1073), 301 states have internal predecessors, (1073), 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) [2023-11-19 04:15:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 1073 transitions. [2023-11-19 04:15:48,970 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 1073 transitions. Word has length 7 [2023-11-19 04:15:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:48,970 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 1073 transitions. [2023-11-19 04:15:48,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 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) [2023-11-19 04:15:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 1073 transitions. [2023-11-19 04:15:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:15:48,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:48,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:48,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 04:15:49,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:49,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:49,194 INFO L85 PathProgramCache]: Analyzing trace with hash -778008143, now seen corresponding path program 1 times [2023-11-19 04:15:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:49,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431335640] [2023-11-19 04:15:49,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:49,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:49,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431335640] [2023-11-19 04:15:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431335640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:49,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:49,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:49,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818196755] [2023-11-19 04:15:49,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:49,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:49,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:49,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:49,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:49,250 INFO L87 Difference]: Start difference. First operand 302 states and 1073 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:15:49,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:49,321 INFO L93 Difference]: Finished difference Result 270 states and 883 transitions. [2023-11-19 04:15:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:49,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-19 04:15:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:49,325 INFO L225 Difference]: With dead ends: 270 [2023-11-19 04:15:49,325 INFO L226 Difference]: Without dead ends: 270 [2023-11-19 04:15:49,325 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 [2023-11-19 04:15:49,328 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:49,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-19 04:15:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-11-19 04:15:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 3.332075471698113) internal successors, (883), 269 states have internal predecessors, (883), 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) [2023-11-19 04:15:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 883 transitions. [2023-11-19 04:15:49,346 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 883 transitions. Word has length 7 [2023-11-19 04:15:49,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:49,346 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 883 transitions. [2023-11-19 04:15:49,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-19 04:15:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 883 transitions. [2023-11-19 04:15:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:15:49,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:49,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:49,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 04:15:49,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:49,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1653383490, now seen corresponding path program 1 times [2023-11-19 04:15:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:49,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382521544] [2023-11-19 04:15:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:49,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:49,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:49,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382521544] [2023-11-19 04:15:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382521544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:49,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:49,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689726213] [2023-11-19 04:15:49,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:49,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:49,418 INFO L87 Difference]: Start difference. First operand 270 states and 883 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:49,488 INFO L93 Difference]: Finished difference Result 322 states and 1103 transitions. [2023-11-19 04:15:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:49,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:15:49,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:49,492 INFO L225 Difference]: With dead ends: 322 [2023-11-19 04:15:49,492 INFO L226 Difference]: Without dead ends: 322 [2023-11-19 04:15:49,493 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 [2023-11-19 04:15:49,494 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:49,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:49,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-19 04:15:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2023-11-19 04:15:49,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 3.4794952681388014) internal successors, (1103), 321 states have internal predecessors, (1103), 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) [2023-11-19 04:15:49,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1103 transitions. [2023-11-19 04:15:49,513 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1103 transitions. Word has length 8 [2023-11-19 04:15:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:49,513 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 1103 transitions. [2023-11-19 04:15:49,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1103 transitions. [2023-11-19 04:15:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:15:49,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:49,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:49,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 04:15:49,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:49,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash -284717176, now seen corresponding path program 1 times [2023-11-19 04:15:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:49,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704218269] [2023-11-19 04:15:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:15:49,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:49,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704218269] [2023-11-19 04:15:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704218269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:49,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850201266] [2023-11-19 04:15:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:49,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:49,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:49,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:49,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:15:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:49,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:15:49,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:49,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:49,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850201266] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106719731] [2023-11-19 04:15:49,859 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:15:49,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:15:49,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-19 04:15:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290364467] [2023-11-19 04:15:49,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:49,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:15:49,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:15:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:15:49,863 INFO L87 Difference]: Start difference. First operand 322 states and 1103 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 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) [2023-11-19 04:15:50,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:50,133 INFO L93 Difference]: Finished difference Result 466 states and 1548 transitions. [2023-11-19 04:15:50,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:15:50,134 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 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 [2023-11-19 04:15:50,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:50,137 INFO L225 Difference]: With dead ends: 466 [2023-11-19 04:15:50,137 INFO L226 Difference]: Without dead ends: 277 [2023-11-19 04:15:50,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:15:50,138 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:50,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:15:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-19 04:15:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2023-11-19 04:15:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 268 states have (on average 3.3208955223880596) internal successors, (890), 270 states have internal predecessors, (890), 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) [2023-11-19 04:15:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 890 transitions. [2023-11-19 04:15:50,152 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 890 transitions. Word has length 9 [2023-11-19 04:15:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:50,152 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 890 transitions. [2023-11-19 04:15:50,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 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) [2023-11-19 04:15:50,152 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 890 transitions. [2023-11-19 04:15:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:15:50,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:50,155 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:50,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:50,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:50,377 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:50,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:50,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2014856053, now seen corresponding path program 1 times [2023-11-19 04:15:50,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:50,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564912738] [2023-11-19 04:15:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:50,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:15:50,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:50,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564912738] [2023-11-19 04:15:50,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564912738] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266958952] [2023-11-19 04:15:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:50,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:50,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:50,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:50,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:15:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:50,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:15:50,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:15:50,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:15:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:15:50,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266958952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:15:50,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [407790685] [2023-11-19 04:15:50,618 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-19 04:15:50,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:15:50,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 04:15:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811114191] [2023-11-19 04:15:50,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:15:50,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:15:50,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:15:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:15:50,625 INFO L87 Difference]: Start difference. First operand 271 states and 890 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2023-11-19 04:15:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:50,772 INFO L93 Difference]: Finished difference Result 427 states and 1550 transitions. [2023-11-19 04:15:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:15:50,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 10 [2023-11-19 04:15:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:50,784 INFO L225 Difference]: With dead ends: 427 [2023-11-19 04:15:50,784 INFO L226 Difference]: Without dead ends: 427 [2023-11-19 04:15:50,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:15:50,785 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:50,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-11-19 04:15:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2023-11-19 04:15:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 424 states have (on average 3.6556603773584904) internal successors, (1550), 426 states have internal predecessors, (1550), 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) [2023-11-19 04:15:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1550 transitions. [2023-11-19 04:15:50,813 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1550 transitions. Word has length 10 [2023-11-19 04:15:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:50,814 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 1550 transitions. [2023-11-19 04:15:50,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2023-11-19 04:15:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1550 transitions. [2023-11-19 04:15:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:15:50,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:50,816 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 04:15:50,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:51,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:51,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 04:15:51,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 570797961, now seen corresponding path program 2 times [2023-11-19 04:15:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:15:51,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128586710] [2023-11-19 04:15:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:51,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:15:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:15:51,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:15:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128586710] [2023-11-19 04:15:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128586710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:15:51,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137340485] [2023-11-19 04:15:51,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:15:51,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:15:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:15:51,189 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:15:51,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:15:51,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 04:15:51,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:15:51,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:15:51,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 04:15:51,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:51,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137340485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:51,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:15:51,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 04:15:51,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655972291] [2023-11-19 04:15:51,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:51,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:51,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:15:51,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:51,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:15:51,338 INFO L87 Difference]: Start difference. First operand 427 states and 1550 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-19 04:15:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:51,373 INFO L93 Difference]: Finished difference Result 331 states and 1218 transitions. [2023-11-19 04:15:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 [2023-11-19 04:15:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:51,375 INFO L225 Difference]: With dead ends: 331 [2023-11-19 04:15:51,375 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:15:51,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:15:51,376 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:51,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:15:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:15:51,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:15:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:15:51,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-11-19 04:15:51,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:51,378 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:15:51,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-19 04:15:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:15:51,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:15:51,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-11-19 04:15:51,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-19 04:15:51,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-19 04:15:51,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-19 04:15:51,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-19 04:15:51,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-19 04:15:51,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-11-19 04:15:51,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-11-19 04:15:51,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-11-19 04:15:51,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-19 04:15:51,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-19 04:15:51,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-19 04:15:51,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-19 04:15:51,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:51,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:15:51,588 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:51,592 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 04:15:51,592 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:15:51,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:15:51 BasicIcfg [2023-11-19 04:15:51,595 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:15:51,596 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:15:51,596 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:15:51,596 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:15:51,597 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:38" (3/4) ... [2023-11-19 04:15:51,599 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:15:51,602 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 04:15:51,602 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 04:15:51,602 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 04:15:51,614 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-19 04:15:51,615 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 04:15:51,615 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 04:15:51,615 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:15:51,741 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:15:51,741 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:15:51,742 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:15:51,742 INFO L158 Benchmark]: Toolchain (without parser) took 14706.14ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 121.0MB in the beginning and 122.7MB in the end (delta: -1.7MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2023-11-19 04:15:51,743 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 58.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:15:51,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.79ms. Allocated memory is still 161.5MB. Free memory was 121.0MB in the beginning and 109.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:15:51,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.24ms. Allocated memory is still 161.5MB. Free memory was 109.4MB in the beginning and 107.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:15:51,744 INFO L158 Benchmark]: Boogie Preprocessor took 36.94ms. Allocated memory is still 161.5MB. Free memory was 107.6MB in the beginning and 105.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:15:51,745 INFO L158 Benchmark]: RCFGBuilder took 672.28ms. Allocated memory is still 161.5MB. Free memory was 105.8MB in the beginning and 129.4MB in the end (delta: -23.6MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-11-19 04:15:51,745 INFO L158 Benchmark]: TraceAbstraction took 13471.85ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 128.2MB in the beginning and 128.0MB in the end (delta: 251.8kB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. [2023-11-19 04:15:51,746 INFO L158 Benchmark]: Witness Printer took 145.65ms. Allocated memory is still 234.9MB. Free memory was 128.0MB in the beginning and 122.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:15:51,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 111.1MB. Free memory is still 58.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.79ms. Allocated memory is still 161.5MB. Free memory was 121.0MB in the beginning and 109.4MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.24ms. Allocated memory is still 161.5MB. Free memory was 109.4MB in the beginning and 107.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.94ms. Allocated memory is still 161.5MB. Free memory was 107.6MB in the beginning and 105.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 672.28ms. Allocated memory is still 161.5MB. Free memory was 105.8MB in the beginning and 129.4MB in the end (delta: -23.6MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * TraceAbstraction took 13471.85ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 128.2MB in the beginning and 128.0MB in the end (delta: 251.8kB). Peak memory consumption was 74.5MB. Max. memory is 16.1GB. * Witness Printer took 145.65ms. Allocated memory is still 234.9MB. Free memory was 128.0MB in the beginning and 122.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 167 PlacesBefore, 38 PlacesAfterwards, 167 TransitionsBefore, 31 TransitionsAfterwards, 1704 CoEnabledTransitionPairs, 7 FixpointIterations, 98 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 167 TotalNumberOfCompositions, 2291 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1880, independent: 1833, independent conditional: 0, independent unconditional: 1833, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1152, independent: 1135, independent conditional: 0, independent unconditional: 1135, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1152, independent: 1135, independent conditional: 0, independent unconditional: 1135, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 94, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1880, independent: 698, independent conditional: 0, independent unconditional: 698, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 1152, unknown conditional: 0, unknown unconditional: 1152] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, 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 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 196 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 304 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 936 IncrementalHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 0 mSDtfsCounter, 936 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=11, InterpolantAutomatonStates: 52, 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, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 129 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 331 SizeOfPredicates, 4 NumberOfNonLiveVariables, 865 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 49/79 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 04:15:51,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42861d1-aecb-4cfd-9eb6-200b0c0d881a/bin/utaipan-verify-t7M7D8N6sZ/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 Result: TRUE