./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5 --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 afd4dff22cd4af07bd40593cdae3d07b68e9e49be619064a67ffd75ffa5bf4b2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:41:37,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:41:37,255 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-21 19:41:37,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:41:37,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:41:37,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:41:37,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:41:37,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:41:37,327 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:41:37,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:41:37,334 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:41:37,335 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:41:37,336 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:41:37,337 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:41:37,338 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:41:37,338 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:41:37,339 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:41:37,339 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:41:37,339 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:41:37,340 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:41:37,340 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:41:37,341 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:41:37,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:41:37,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:41:37,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:41:37,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:41:37,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:41:37,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:41:37,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:41:37,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:41:37,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:41:37,359 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 19:41:37,359 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:41:37,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:41:37,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:41:37,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:41:37,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:41:37,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:41:37,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:41:37,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:41:37,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:41:37,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:41:37,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:41:37,363 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:41:37,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:41:37,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:41:37,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:41:37,364 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:41:37,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:41:37,364 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_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afd4dff22cd4af07bd40593cdae3d07b68e9e49be619064a67ffd75ffa5bf4b2 [2023-11-21 19:41:37,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:41:37,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:41:37,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:41:37,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:41:37,678 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:41:37,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2023-11-21 19:41:40,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:41:41,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:41:41,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/sv-benchmarks/c/weaver/chl-time-symm.wvr.c [2023-11-21 19:41:41,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/data/e2940c379/4ebab78970c7472cb134bbedd42a2c29/FLAG8ad499574 [2023-11-21 19:41:41,114 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/data/e2940c379/4ebab78970c7472cb134bbedd42a2c29 [2023-11-21 19:41:41,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:41:41,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:41:41,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:41:41,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:41:41,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:41:41,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a54056d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41, skipping insertion in model container [2023-11-21 19:41:41,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:41:41,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:41:41,496 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:41:41,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:41:41,565 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:41:41,565 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:41:41,574 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:41:41,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41 WrapperNode [2023-11-21 19:41:41,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:41:41,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:41:41,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:41:41,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:41:41,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,638 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 10, calls inlined = 16, statements flattened = 215 [2023-11-21 19:41:41,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:41:41,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:41:41,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:41:41,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:41:41,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,666 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:41:41,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:41:41,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:41:41,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:41:41,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (1/1) ... [2023-11-21 19:41:41,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:41:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:41:41,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:41:41,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:41:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:41:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 19:41:41,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 19:41:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 19:41:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 19:41:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:41:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:41:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:41:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:41:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:41:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:41:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:41:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:41:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:41:41,795 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:41:41,959 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:41:41,962 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:41:42,613 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:41:43,788 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:41:43,788 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:41:43,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:41:43 BoogieIcfgContainer [2023-11-21 19:41:43,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:41:43,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:41:43,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:41:43,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:41:43,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:41:41" (1/3) ... [2023-11-21 19:41:43,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2938a612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:41:43, skipping insertion in model container [2023-11-21 19:41:43,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:41:41" (2/3) ... [2023-11-21 19:41:43,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2938a612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:41:43, skipping insertion in model container [2023-11-21 19:41:43,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:41:43" (3/3) ... [2023-11-21 19:41:43,810 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-symm.wvr.c [2023-11-21 19:41:43,828 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 19:41:43,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:41:43,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-21 19:41:43,842 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:41:44,097 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 19:41:44,141 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 45 transitions, 104 flow [2023-11-21 19:41:44,246 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 583 states, 413 states have (on average 3.261501210653753) internal successors, (1347), 582 states have internal predecessors, (1347), 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) [2023-11-21 19:41:44,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:41:44,277 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;@624883c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:41:44,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-11-21 19:41:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 583 states, 413 states have (on average 3.261501210653753) internal successors, (1347), 582 states have internal predecessors, (1347), 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) [2023-11-21 19:41:44,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:44,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:44,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:44,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash 25982691, now seen corresponding path program 1 times [2023-11-21 19:41:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044022113] [2023-11-21 19:41:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:44,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044022113] [2023-11-21 19:41:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044022113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:44,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:44,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366226897] [2023-11-21 19:41:44,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:44,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:41:44,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:41:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:41:44,628 INFO L87 Difference]: Start difference. First operand has 583 states, 413 states have (on average 3.261501210653753) internal successors, (1347), 582 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:44,823 INFO L93 Difference]: Finished difference Result 341 states and 769 transitions. [2023-11-21 19:41:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:41:44,830 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:44,850 INFO L225 Difference]: With dead ends: 341 [2023-11-21 19:41:44,855 INFO L226 Difference]: Without dead ends: 326 [2023-11-21 19:41:44,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:41:44,864 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:44,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:41:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-21 19:41:44,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2023-11-21 19:41:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 246 states have (on average 3.0) internal successors, (738), 325 states have internal predecessors, (738), 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) [2023-11-21 19:41:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 738 transitions. [2023-11-21 19:41:44,981 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 738 transitions. Word has length 4 [2023-11-21 19:41:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:44,983 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 738 transitions. [2023-11-21 19:41:44,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 738 transitions. [2023-11-21 19:41:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:44,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:44,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:44,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:41:44,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:44,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash 25982692, now seen corresponding path program 1 times [2023-11-21 19:41:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:44,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414592441] [2023-11-21 19:41:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:44,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:45,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414592441] [2023-11-21 19:41:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414592441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:45,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:45,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:45,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759682556] [2023-11-21 19:41:45,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:45,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:41:45,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:45,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:41:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:41:45,176 INFO L87 Difference]: Start difference. First operand 326 states and 738 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:45,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:45,264 INFO L93 Difference]: Finished difference Result 276 states and 619 transitions. [2023-11-21 19:41:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:41:45,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:45,269 INFO L225 Difference]: With dead ends: 276 [2023-11-21 19:41:45,269 INFO L226 Difference]: Without dead ends: 276 [2023-11-21 19:41:45,270 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 [2023-11-21 19:41:45,272 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:45,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:41:45,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-21 19:41:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-11-21 19:41:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 213 states have (on average 2.9061032863849765) internal successors, (619), 275 states have internal predecessors, (619), 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) [2023-11-21 19:41:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 619 transitions. [2023-11-21 19:41:45,290 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 619 transitions. Word has length 4 [2023-11-21 19:41:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:45,291 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 619 transitions. [2023-11-21 19:41:45,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 619 transitions. [2023-11-21 19:41:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:45,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:45,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:45,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:41:45,293 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:45,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:45,294 INFO L85 PathProgramCache]: Analyzing trace with hash 25982693, now seen corresponding path program 1 times [2023-11-21 19:41:45,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:45,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747758362] [2023-11-21 19:41:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:45,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:45,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747758362] [2023-11-21 19:41:45,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747758362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:45,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:45,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:45,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104448653] [2023-11-21 19:41:45,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:45,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:41:45,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:45,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:41:45,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:41:45,404 INFO L87 Difference]: Start difference. First operand 276 states and 619 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:45,481 INFO L93 Difference]: Finished difference Result 230 states and 510 transitions. [2023-11-21 19:41:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:41:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:45,484 INFO L225 Difference]: With dead ends: 230 [2023-11-21 19:41:45,485 INFO L226 Difference]: Without dead ends: 230 [2023-11-21 19:41:45,485 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 [2023-11-21 19:41:45,493 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:45,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:41:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-21 19:41:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2023-11-21 19:41:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 182 states have (on average 2.802197802197802) internal successors, (510), 229 states have internal predecessors, (510), 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) [2023-11-21 19:41:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 510 transitions. [2023-11-21 19:41:45,511 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 510 transitions. Word has length 4 [2023-11-21 19:41:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:45,556 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 510 transitions. [2023-11-21 19:41:45,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 510 transitions. [2023-11-21 19:41:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:45,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:45,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:45,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:41:45,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:45,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash 25982695, now seen corresponding path program 1 times [2023-11-21 19:41:45,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:45,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825173501] [2023-11-21 19:41:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:45,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:45,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:45,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825173501] [2023-11-21 19:41:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825173501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:45,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623886343] [2023-11-21 19:41:45,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:45,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:41:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:45,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:41:45,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:41:45,672 INFO L87 Difference]: Start difference. First operand 230 states and 510 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:45,733 INFO L93 Difference]: Finished difference Result 188 states and 411 transitions. [2023-11-21 19:41:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:41:45,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:45,736 INFO L225 Difference]: With dead ends: 188 [2023-11-21 19:41:45,736 INFO L226 Difference]: Without dead ends: 188 [2023-11-21 19:41:45,737 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 [2023-11-21 19:41:45,745 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:45,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:41:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-21 19:41:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-11-21 19:41:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 153 states have (on average 2.6862745098039214) internal successors, (411), 187 states have internal predecessors, (411), 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) [2023-11-21 19:41:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 411 transitions. [2023-11-21 19:41:45,756 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 411 transitions. Word has length 4 [2023-11-21 19:41:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:45,756 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 411 transitions. [2023-11-21 19:41:45,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 411 transitions. [2023-11-21 19:41:45,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:45,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:45,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:45,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:41:45,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:45,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash 25982696, now seen corresponding path program 1 times [2023-11-21 19:41:45,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:45,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159315923] [2023-11-21 19:41:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:45,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:45,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:45,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159315923] [2023-11-21 19:41:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159315923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:45,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:45,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:45,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367952269] [2023-11-21 19:41:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:45,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:41:45,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:45,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:41:45,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:41:45,914 INFO L87 Difference]: Start difference. First operand 188 states and 411 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:45,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:45,987 INFO L93 Difference]: Finished difference Result 150 states and 322 transitions. [2023-11-21 19:41:45,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:41:45,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:45,990 INFO L225 Difference]: With dead ends: 150 [2023-11-21 19:41:45,990 INFO L226 Difference]: Without dead ends: 150 [2023-11-21 19:41:45,990 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 [2023-11-21 19:41:45,993 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:45,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:41:45,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-21 19:41:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-11-21 19:41:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 126 states have (on average 2.5555555555555554) internal successors, (322), 149 states have internal predecessors, (322), 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) [2023-11-21 19:41:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 322 transitions. [2023-11-21 19:41:46,003 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 322 transitions. Word has length 4 [2023-11-21 19:41:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:46,003 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 322 transitions. [2023-11-21 19:41:46,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 322 transitions. [2023-11-21 19:41:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:46,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:46,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:46,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:41:46,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:46,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash 25982698, now seen corresponding path program 1 times [2023-11-21 19:41:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:46,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800393253] [2023-11-21 19:41:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:46,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:46,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:46,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800393253] [2023-11-21 19:41:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800393253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:46,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42886849] [2023-11-21 19:41:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:46,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:41:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:41:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:41:46,064 INFO L87 Difference]: Start difference. First operand 150 states and 322 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:46,114 INFO L93 Difference]: Finished difference Result 116 states and 243 transitions. [2023-11-21 19:41:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:41:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:46,116 INFO L225 Difference]: With dead ends: 116 [2023-11-21 19:41:46,116 INFO L226 Difference]: Without dead ends: 116 [2023-11-21 19:41:46,116 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 [2023-11-21 19:41:46,117 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:46,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:41:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-21 19:41:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-21 19:41:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 101 states have (on average 2.405940594059406) internal successors, (243), 115 states have internal predecessors, (243), 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) [2023-11-21 19:41:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 243 transitions. [2023-11-21 19:41:46,123 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 243 transitions. Word has length 4 [2023-11-21 19:41:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:46,124 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 243 transitions. [2023-11-21 19:41:46,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 243 transitions. [2023-11-21 19:41:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:46,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:46,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:46,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:41:46,125 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:46,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash 25982699, now seen corresponding path program 1 times [2023-11-21 19:41:46,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:46,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828397086] [2023-11-21 19:41:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:46,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:46,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828397086] [2023-11-21 19:41:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828397086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:46,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:46,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:46,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962383397] [2023-11-21 19:41:46,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:46,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:41:46,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:46,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:41:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:41:46,178 INFO L87 Difference]: Start difference. First operand 116 states and 243 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:46,216 INFO L93 Difference]: Finished difference Result 86 states and 174 transitions. [2023-11-21 19:41:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:41:46,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:46,218 INFO L225 Difference]: With dead ends: 86 [2023-11-21 19:41:46,218 INFO L226 Difference]: Without dead ends: 86 [2023-11-21 19:41:46,218 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 [2023-11-21 19:41:46,219 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:46,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:41:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-21 19:41:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-21 19:41:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 2.230769230769231) internal successors, (174), 85 states have internal predecessors, (174), 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) [2023-11-21 19:41:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 174 transitions. [2023-11-21 19:41:46,224 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 174 transitions. Word has length 4 [2023-11-21 19:41:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:46,224 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 174 transitions. [2023-11-21 19:41:46,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 174 transitions. [2023-11-21 19:41:46,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:46,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:46,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:46,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:41:46,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:46,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:46,227 INFO L85 PathProgramCache]: Analyzing trace with hash 25982701, now seen corresponding path program 1 times [2023-11-21 19:41:46,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:46,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983452439] [2023-11-21 19:41:46,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:46,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:46,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983452439] [2023-11-21 19:41:46,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983452439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:46,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:46,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:46,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033478381] [2023-11-21 19:41:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:46,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:41:46,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:46,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:41:46,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:41:46,369 INFO L87 Difference]: Start difference. First operand 86 states and 174 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:46,426 INFO L93 Difference]: Finished difference Result 60 states and 115 transitions. [2023-11-21 19:41:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:41:46,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:46,428 INFO L225 Difference]: With dead ends: 60 [2023-11-21 19:41:46,429 INFO L226 Difference]: Without dead ends: 60 [2023-11-21 19:41:46,429 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 [2023-11-21 19:41:46,430 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:46,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:41:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-21 19:41:46,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-21 19:41:46,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 2.017543859649123) internal successors, (115), 59 states have internal predecessors, (115), 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) [2023-11-21 19:41:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 115 transitions. [2023-11-21 19:41:46,435 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 115 transitions. Word has length 4 [2023-11-21 19:41:46,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:46,436 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 115 transitions. [2023-11-21 19:41:46,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,436 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 115 transitions. [2023-11-21 19:41:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:41:46,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:41:46,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:41:46,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 19:41:46,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 49 more)] === [2023-11-21 19:41:46,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:41:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 25982702, now seen corresponding path program 1 times [2023-11-21 19:41:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:41:46,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025566279] [2023-11-21 19:41:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:41:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:41:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:41:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:41:46,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:41:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025566279] [2023-11-21 19:41:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025566279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:41:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:41:46,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:41:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417877957] [2023-11-21 19:41:46,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:41:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:41:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:41:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:41:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:41:46,550 INFO L87 Difference]: Start difference. First operand 60 states and 115 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:41:46,577 INFO L93 Difference]: Finished difference Result 38 states and 66 transitions. [2023-11-21 19:41:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:41:46,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:41:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:41:46,578 INFO L225 Difference]: With dead ends: 38 [2023-11-21 19:41:46,578 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 19:41:46,579 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 [2023-11-21 19:41:46,580 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:41:46,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:41:46,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 19:41:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 19:41:46,581 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) [2023-11-21 19:41:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 19:41:46,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2023-11-21 19:41:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:41:46,582 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 19:41:46,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:41:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 19:41:46,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 19:41:46,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 52 remaining) [2023-11-21 19:41:46,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 52 remaining) [2023-11-21 19:41:46,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 52 remaining) [2023-11-21 19:41:46,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 52 remaining) [2023-11-21 19:41:46,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 52 remaining) [2023-11-21 19:41:46,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 52 remaining) [2023-11-21 19:41:46,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 52 remaining) [2023-11-21 19:41:46,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 52 remaining) [2023-11-21 19:41:46,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 52 remaining) [2023-11-21 19:41:46,588 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 52 remaining) [2023-11-21 19:41:46,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 52 remaining) [2023-11-21 19:41:46,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 52 remaining) [2023-11-21 19:41:46,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 52 remaining) [2023-11-21 19:41:46,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 52 remaining) [2023-11-21 19:41:46,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 52 remaining) [2023-11-21 19:41:46,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 52 remaining) [2023-11-21 19:41:46,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 52 remaining) [2023-11-21 19:41:46,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 52 remaining) [2023-11-21 19:41:46,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 52 remaining) [2023-11-21 19:41:46,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 52 remaining) [2023-11-21 19:41:46,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 52 remaining) [2023-11-21 19:41:46,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 52 remaining) [2023-11-21 19:41:46,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 52 remaining) [2023-11-21 19:41:46,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 52 remaining) [2023-11-21 19:41:46,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 52 remaining) [2023-11-21 19:41:46,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 52 remaining) [2023-11-21 19:41:46,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 52 remaining) [2023-11-21 19:41:46,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 52 remaining) [2023-11-21 19:41:46,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 52 remaining) [2023-11-21 19:41:46,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 52 remaining) [2023-11-21 19:41:46,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 52 remaining) [2023-11-21 19:41:46,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 52 remaining) [2023-11-21 19:41:46,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 52 remaining) [2023-11-21 19:41:46,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 52 remaining) [2023-11-21 19:41:46,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 52 remaining) [2023-11-21 19:41:46,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 52 remaining) [2023-11-21 19:41:46,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 52 remaining) [2023-11-21 19:41:46,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 52 remaining) [2023-11-21 19:41:46,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 52 remaining) [2023-11-21 19:41:46,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 52 remaining) [2023-11-21 19:41:46,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 52 remaining) [2023-11-21 19:41:46,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 52 remaining) [2023-11-21 19:41:46,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 52 remaining) [2023-11-21 19:41:46,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 52 remaining) [2023-11-21 19:41:46,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 52 remaining) [2023-11-21 19:41:46,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 52 remaining) [2023-11-21 19:41:46,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 52 remaining) [2023-11-21 19:41:46,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 52 remaining) [2023-11-21 19:41:46,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 52 remaining) [2023-11-21 19:41:46,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 52 remaining) [2023-11-21 19:41:46,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 52 remaining) [2023-11-21 19:41:46,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 52 remaining) [2023-11-21 19:41:46,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 19:41:46,603 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:41:46,609 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 19:41:46,609 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:41:46,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:41:46 BasicIcfg [2023-11-21 19:41:46,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:41:46,614 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:41:46,614 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:41:46,615 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:41:46,615 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:41:43" (3/4) ... [2023-11-21 19:41:46,617 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 19:41:46,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-21 19:41:46,621 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-21 19:41:46,627 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 67 nodes and edges [2023-11-21 19:41:46,627 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-21 19:41:46,628 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-21 19:41:46,628 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-21 19:41:46,722 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:41:46,723 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/witness.yml [2023-11-21 19:41:46,723 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:41:46,724 INFO L158 Benchmark]: Toolchain (without parser) took 5593.10ms. Allocated memory was 132.1MB in the beginning and 241.2MB in the end (delta: 109.1MB). Free memory was 87.5MB in the beginning and 169.9MB in the end (delta: -82.4MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2023-11-21 19:41:46,725 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 132.1MB. Free memory was 101.4MB in the beginning and 101.3MB in the end (delta: 86.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:41:46,725 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.76ms. Allocated memory is still 132.1MB. Free memory was 87.2MB in the beginning and 75.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 19:41:46,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.28ms. Allocated memory is still 132.1MB. Free memory was 75.9MB in the beginning and 73.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:41:46,726 INFO L158 Benchmark]: Boogie Preprocessor took 38.44ms. Allocated memory is still 132.1MB. Free memory was 73.5MB in the beginning and 72.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:41:46,726 INFO L158 Benchmark]: RCFGBuilder took 2113.00ms. Allocated memory was 132.1MB in the beginning and 186.6MB in the end (delta: 54.5MB). Free memory was 72.0MB in the beginning and 59.5MB in the end (delta: 12.5MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. [2023-11-21 19:41:46,727 INFO L158 Benchmark]: TraceAbstraction took 2816.17ms. Allocated memory was 186.6MB in the beginning and 241.2MB in the end (delta: 54.5MB). Free memory was 58.5MB in the beginning and 174.1MB in the end (delta: -115.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:41:46,727 INFO L158 Benchmark]: Witness Printer took 109.20ms. Allocated memory is still 241.2MB. Free memory was 174.1MB in the beginning and 169.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 19:41:46,730 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 132.1MB. Free memory was 101.4MB in the beginning and 101.3MB in the end (delta: 86.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.76ms. Allocated memory is still 132.1MB. Free memory was 87.2MB in the beginning and 75.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.28ms. Allocated memory is still 132.1MB. Free memory was 75.9MB in the beginning and 73.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.44ms. Allocated memory is still 132.1MB. Free memory was 73.5MB in the beginning and 72.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2113.00ms. Allocated memory was 132.1MB in the beginning and 186.6MB in the end (delta: 54.5MB). Free memory was 72.0MB in the beginning and 59.5MB in the end (delta: 12.5MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2816.17ms. Allocated memory was 186.6MB in the beginning and 241.2MB in the end (delta: 54.5MB). Free memory was 58.5MB in the beginning and 174.1MB in the end (delta: -115.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 109.20ms. Allocated memory is still 241.2MB. Free memory was 174.1MB in the beginning and 169.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: 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 5 procedures, 80 locations, 52 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 172 IncrementalHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 20 mSDtfsCounter, 172 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=583occurred in iteration=0, InterpolantAutomatonStates: 26, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 19:41:46,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_200f0a6e-12b2-4630-98e7-3e39d1188d16/bin/utaipan-verify-QoSU8krkJ5/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