./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4332eab059a2e63fe2129905a86c0f1576ab7a248b3300f50ebbc0c52549386 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:49:44,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:49:44,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:49:44,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:49:44,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:49:44,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:49:44,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:49:44,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:49:44,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:49:44,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:49:44,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:49:44,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:49:44,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:49:44,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:49:44,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:49:44,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:49:44,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:49:44,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:49:44,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:49:44,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:49:44,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:49:44,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:49:44,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:49:44,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:49:44,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:49:44,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:49:44,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:49:44,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:49:44,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:49:44,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:49:44,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:49:44,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:49:44,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:49:44,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:49:44,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:49:44,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:49:44,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:49:44,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:49:44,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:49:44,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:49:44,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:49:44,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:49:44,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:49:44,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:49:44,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:49:44,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:49:44,304 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:49:44,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:49:44,305 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:49:44,305 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:49:44,305 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:49:44,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:49:44,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:49:44,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:49:44,308 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:49:44,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:49:44,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:49:44,309 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:49:44,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:49:44,310 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:49:44,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:49:44,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:49:44,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:49:44,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:49:44,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:49:44,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:49:44,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:49:44,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:49:44,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:49:44,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:49:44,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:49:44,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:49:44,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:49:44,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:49:44,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:49:44,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:49:44,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:49:44,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:49:44,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:49:44,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:49:44,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:49:44,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:49:44,320 INFO L138 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_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4332eab059a2e63fe2129905a86c0f1576ab7a248b3300f50ebbc0c52549386 [2021-11-19 14:49:44,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:49:44,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:49:44,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:49:44,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:49:44,676 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:49:44,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-19 14:49:44,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/data/7abe35e2f/0c9dec7e52b949159fde4877dce5162e/FLAG8b5e58f91 [2021-11-19 14:49:46,112 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:49:46,113 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-19 14:49:46,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/data/7abe35e2f/0c9dec7e52b949159fde4877dce5162e/FLAG8b5e58f91 [2021-11-19 14:49:46,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/data/7abe35e2f/0c9dec7e52b949159fde4877dce5162e [2021-11-19 14:49:46,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:49:46,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:49:46,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:49:46,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:49:46,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:49:46,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:49:46" (1/1) ... [2021-11-19 14:49:46,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7135c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:46, skipping insertion in model container [2021-11-19 14:49:46,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:49:46" (1/1) ... [2021-11-19 14:49:46,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:49:46,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:49:47,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2021-11-19 14:49:49,596 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:49:49,643 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:49:49,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2021-11-19 14:49:51,115 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:49:51,157 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:49:51,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51 WrapperNode [2021-11-19 14:49:51,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:49:51,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:49:51,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:49:51,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:49:51,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:51,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:51,567 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19936 [2021-11-19 14:49:51,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:49:51,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:49:51,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:49:51,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:49:51,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:51,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:51,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:51,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:51,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:51,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:52,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:52,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:49:52,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:49:52,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:49:52,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:49:52,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (1/1) ... [2021-11-19 14:49:52,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:49:52,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:49:52,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:49:52,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a770fc9-b279-461e-8f69-554b84c3c366/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:49:52,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:49:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:49:52,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:49:52,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:49:53,010 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:49:53,012 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:50:00,742 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:50:01,791 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:50:01,792 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:50:01,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:50:01 BoogieIcfgContainer [2021-11-19 14:50:01,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:50:01,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:50:01,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:50:01,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:50:01,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:49:46" (1/3) ... [2021-11-19 14:50:01,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8a6c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:50:01, skipping insertion in model container [2021-11-19 14:50:01,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:49:51" (2/3) ... [2021-11-19 14:50:01,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8a6c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:50:01, skipping insertion in model container [2021-11-19 14:50:01,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:50:01" (3/3) ... [2021-11-19 14:50:01,815 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-19 14:50:01,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:50:01,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:50:01,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:50:01,915 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:50:01,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:50:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 2820 states, 2818 states have (on average 1.910929737402413) internal successors, (5385), 2819 states have internal predecessors, (5385), 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) [2021-11-19 14:50:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 14:50:02,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:02,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:02,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:02,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:02,045 INFO L85 PathProgramCache]: Analyzing trace with hash -201642858, now seen corresponding path program 1 times [2021-11-19 14:50:02,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:02,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643053427] [2021-11-19 14:50:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:02,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:02,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:02,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643053427] [2021-11-19 14:50:02,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643053427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:02,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:02,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:50:02,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187578985] [2021-11-19 14:50:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:02,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:02,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:02,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:02,742 INFO L87 Difference]: Start difference. First operand has 2820 states, 2818 states have (on average 1.910929737402413) internal successors, (5385), 2819 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-19 14:50:03,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:03,056 INFO L93 Difference]: Finished difference Result 3258 states and 6110 transitions. [2021-11-19 14:50:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-19 14:50:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:03,094 INFO L225 Difference]: With dead ends: 3258 [2021-11-19 14:50:03,094 INFO L226 Difference]: Without dead ends: 3037 [2021-11-19 14:50:03,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:03,105 INFO L933 BasicCegarLoop]: 5383 mSDtfsCounter, 2638 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 8378 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:03,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2638 Valid, 8378 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:50:03,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2021-11-19 14:50:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 3035. [2021-11-19 14:50:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 3034 states have (on average 1.2722478576137113) internal successors, (3860), 3034 states have internal predecessors, (3860), 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) [2021-11-19 14:50:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 3860 transitions. [2021-11-19 14:50:03,264 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 3860 transitions. Word has length 78 [2021-11-19 14:50:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:03,265 INFO L470 AbstractCegarLoop]: Abstraction has 3035 states and 3860 transitions. [2021-11-19 14:50:03,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-19 14:50:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 3860 transitions. [2021-11-19 14:50:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 14:50:03,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:03,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:03,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:50:03,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:03,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash -924201457, now seen corresponding path program 1 times [2021-11-19 14:50:03,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:03,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694107743] [2021-11-19 14:50:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:03,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:03,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:03,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694107743] [2021-11-19 14:50:03,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694107743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:03,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:03,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:50:03,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843259101] [2021-11-19 14:50:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:03,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:50:03,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:03,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:50:03,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:50:03,518 INFO L87 Difference]: Start difference. First operand 3035 states and 3860 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-19 14:50:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:05,579 INFO L93 Difference]: Finished difference Result 4646 states and 6013 transitions. [2021-11-19 14:50:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:50:05,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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 78 [2021-11-19 14:50:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:05,601 INFO L225 Difference]: With dead ends: 4646 [2021-11-19 14:50:05,601 INFO L226 Difference]: Without dead ends: 2546 [2021-11-19 14:50:05,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:50:05,615 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 8055 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8055 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:05,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8055 Valid, 1713 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 14:50:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-11-19 14:50:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2544. [2021-11-19 14:50:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 2543 states have (on average 1.2965001966181675) internal successors, (3297), 2543 states have internal predecessors, (3297), 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) [2021-11-19 14:50:05,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3297 transitions. [2021-11-19 14:50:05,765 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3297 transitions. Word has length 78 [2021-11-19 14:50:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:05,771 INFO L470 AbstractCegarLoop]: Abstraction has 2544 states and 3297 transitions. [2021-11-19 14:50:05,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-19 14:50:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3297 transitions. [2021-11-19 14:50:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 14:50:05,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:05,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:05,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:50:05,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:05,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1301065873, now seen corresponding path program 1 times [2021-11-19 14:50:05,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:05,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186464044] [2021-11-19 14:50:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:05,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:05,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:05,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186464044] [2021-11-19 14:50:05,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186464044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:05,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:05,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:50:05,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915023821] [2021-11-19 14:50:05,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:05,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:05,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:05,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:05,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:05,993 INFO L87 Difference]: Start difference. First operand 2544 states and 3297 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-19 14:50:06,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:06,256 INFO L93 Difference]: Finished difference Result 4389 states and 5792 transitions. [2021-11-19 14:50:06,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:06,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-19 14:50:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:06,284 INFO L225 Difference]: With dead ends: 4389 [2021-11-19 14:50:06,284 INFO L226 Difference]: Without dead ends: 3817 [2021-11-19 14:50:06,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:06,297 INFO L933 BasicCegarLoop]: 3544 mSDtfsCounter, 2275 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 5038 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:06,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2275 Valid, 5038 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:50:06,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3817 states. [2021-11-19 14:50:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3817 to 3815. [2021-11-19 14:50:06,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3815 states, 3814 states have (on average 1.29837441006817) internal successors, (4952), 3814 states have internal predecessors, (4952), 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) [2021-11-19 14:50:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 4952 transitions. [2021-11-19 14:50:06,479 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 4952 transitions. Word has length 79 [2021-11-19 14:50:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:06,482 INFO L470 AbstractCegarLoop]: Abstraction has 3815 states and 4952 transitions. [2021-11-19 14:50:06,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-19 14:50:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 4952 transitions. [2021-11-19 14:50:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 14:50:06,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:06,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:06,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 14:50:06,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:06,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1840010013, now seen corresponding path program 1 times [2021-11-19 14:50:06,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:06,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365256365] [2021-11-19 14:50:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:06,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:06,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:06,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365256365] [2021-11-19 14:50:06,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365256365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:06,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:06,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:50:06,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081410658] [2021-11-19 14:50:06,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:06,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:06,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:06,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:06,687 INFO L87 Difference]: Start difference. First operand 3815 states and 4952 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-19 14:50:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:07,194 INFO L93 Difference]: Finished difference Result 5653 states and 7548 transitions. [2021-11-19 14:50:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:07,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-19 14:50:07,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:07,230 INFO L225 Difference]: With dead ends: 5653 [2021-11-19 14:50:07,230 INFO L226 Difference]: Without dead ends: 4866 [2021-11-19 14:50:07,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:07,235 INFO L933 BasicCegarLoop]: 2641 mSDtfsCounter, 1186 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:07,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 4148 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:50:07,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2021-11-19 14:50:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4864. [2021-11-19 14:50:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4864 states, 4863 states have (on average 1.315443142093358) internal successors, (6397), 4863 states have internal predecessors, (6397), 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) [2021-11-19 14:50:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4864 states to 4864 states and 6397 transitions. [2021-11-19 14:50:07,607 INFO L78 Accepts]: Start accepts. Automaton has 4864 states and 6397 transitions. Word has length 79 [2021-11-19 14:50:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:07,607 INFO L470 AbstractCegarLoop]: Abstraction has 4864 states and 6397 transitions. [2021-11-19 14:50:07,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-19 14:50:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4864 states and 6397 transitions. [2021-11-19 14:50:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 14:50:07,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:07,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:07,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 14:50:07,621 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:07,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1469587710, now seen corresponding path program 1 times [2021-11-19 14:50:07,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:07,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146186109] [2021-11-19 14:50:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:07,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:07,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:07,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146186109] [2021-11-19 14:50:07,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146186109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:07,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:07,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:50:07,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406147803] [2021-11-19 14:50:07,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:07,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:50:07,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:50:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:50:07,765 INFO L87 Difference]: Start difference. First operand 4864 states and 6397 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-19 14:50:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:09,303 INFO L93 Difference]: Finished difference Result 9703 states and 13075 transitions. [2021-11-19 14:50:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:50:09,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2021-11-19 14:50:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:09,344 INFO L225 Difference]: With dead ends: 9703 [2021-11-19 14:50:09,344 INFO L226 Difference]: Without dead ends: 5713 [2021-11-19 14:50:09,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:50:09,354 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 5980 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5980 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:09,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5980 Valid, 1333 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:50:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2021-11-19 14:50:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5711. [2021-11-19 14:50:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 5710 states have (on average 1.3504378283712783) internal successors, (7711), 5710 states have internal predecessors, (7711), 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) [2021-11-19 14:50:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 7711 transitions. [2021-11-19 14:50:09,858 INFO L78 Accepts]: Start accepts. Automaton has 5711 states and 7711 transitions. Word has length 79 [2021-11-19 14:50:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:09,860 INFO L470 AbstractCegarLoop]: Abstraction has 5711 states and 7711 transitions. [2021-11-19 14:50:09,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-19 14:50:09,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5711 states and 7711 transitions. [2021-11-19 14:50:09,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:50:09,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:09,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:09,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 14:50:09,885 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:09,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:09,886 INFO L85 PathProgramCache]: Analyzing trace with hash -961390150, now seen corresponding path program 1 times [2021-11-19 14:50:09,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:09,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364485270] [2021-11-19 14:50:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:09,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:10,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:10,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364485270] [2021-11-19 14:50:10,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364485270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:10,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:10,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:50:10,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527894854] [2021-11-19 14:50:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:10,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:10,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:10,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:10,056 INFO L87 Difference]: Start difference. First operand 5711 states and 7711 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-19 14:50:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:10,759 INFO L93 Difference]: Finished difference Result 13602 states and 18631 transitions. [2021-11-19 14:50:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:10,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-19 14:50:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:10,840 INFO L225 Difference]: With dead ends: 13602 [2021-11-19 14:50:10,840 INFO L226 Difference]: Without dead ends: 9637 [2021-11-19 14:50:10,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:10,853 INFO L933 BasicCegarLoop]: 2565 mSDtfsCounter, 1657 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 3703 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:10,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1657 Valid, 3703 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:50:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9637 states. [2021-11-19 14:50:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9637 to 9635. [2021-11-19 14:50:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9635 states, 9634 states have (on average 1.3517749636703342) internal successors, (13023), 9634 states have internal predecessors, (13023), 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) [2021-11-19 14:50:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9635 states to 9635 states and 13023 transitions. [2021-11-19 14:50:11,722 INFO L78 Accepts]: Start accepts. Automaton has 9635 states and 13023 transitions. Word has length 80 [2021-11-19 14:50:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:11,722 INFO L470 AbstractCegarLoop]: Abstraction has 9635 states and 13023 transitions. [2021-11-19 14:50:11,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-19 14:50:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 9635 states and 13023 transitions. [2021-11-19 14:50:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:50:11,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:11,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:11,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 14:50:11,742 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:11,743 INFO L85 PathProgramCache]: Analyzing trace with hash 473457151, now seen corresponding path program 1 times [2021-11-19 14:50:11,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:11,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094393550] [2021-11-19 14:50:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:11,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:11,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:11,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094393550] [2021-11-19 14:50:11,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094393550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:11,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:11,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:50:11,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767208382] [2021-11-19 14:50:11,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:11,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:50:11,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:50:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:50:11,879 INFO L87 Difference]: Start difference. First operand 9635 states and 13023 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-19 14:50:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:13,721 INFO L93 Difference]: Finished difference Result 20988 states and 28663 transitions. [2021-11-19 14:50:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:50:13,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2021-11-19 14:50:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:13,760 INFO L225 Difference]: With dead ends: 20988 [2021-11-19 14:50:13,761 INFO L226 Difference]: Without dead ends: 13135 [2021-11-19 14:50:13,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:50:13,778 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 4989 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4989 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:13,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4989 Valid, 1021 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 14:50:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13135 states. [2021-11-19 14:50:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13135 to 13133. [2021-11-19 14:50:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13133 states, 13132 states have (on average 1.3488425220834603) internal successors, (17713), 13132 states have internal predecessors, (17713), 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) [2021-11-19 14:50:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13133 states to 13133 states and 17713 transitions. [2021-11-19 14:50:14,692 INFO L78 Accepts]: Start accepts. Automaton has 13133 states and 17713 transitions. Word has length 80 [2021-11-19 14:50:14,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:14,693 INFO L470 AbstractCegarLoop]: Abstraction has 13133 states and 17713 transitions. [2021-11-19 14:50:14,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-19 14:50:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 13133 states and 17713 transitions. [2021-11-19 14:50:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:50:14,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:14,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:14,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 14:50:14,715 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:14,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1860348150, now seen corresponding path program 1 times [2021-11-19 14:50:14,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:14,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323423724] [2021-11-19 14:50:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:14,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:14,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:14,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323423724] [2021-11-19 14:50:14,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323423724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:14,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:14,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:50:14,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242129233] [2021-11-19 14:50:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:14,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:50:14,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:50:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:50:14,898 INFO L87 Difference]: Start difference. First operand 13133 states and 17713 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-19 14:50:17,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:17,004 INFO L93 Difference]: Finished difference Result 33688 states and 46080 transitions. [2021-11-19 14:50:17,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:50:17,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2021-11-19 14:50:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:17,063 INFO L225 Difference]: With dead ends: 33688 [2021-11-19 14:50:17,063 INFO L226 Difference]: Without dead ends: 21338 [2021-11-19 14:50:17,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:50:17,085 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 4123 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:17,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4123 Valid, 943 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:50:17,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21338 states. [2021-11-19 14:50:18,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21338 to 21336. [2021-11-19 14:50:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21336 states, 21335 states have (on average 1.359971877197094) internal successors, (29015), 21335 states have internal predecessors, (29015), 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) [2021-11-19 14:50:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21336 states to 21336 states and 29015 transitions. [2021-11-19 14:50:18,497 INFO L78 Accepts]: Start accepts. Automaton has 21336 states and 29015 transitions. Word has length 80 [2021-11-19 14:50:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:18,498 INFO L470 AbstractCegarLoop]: Abstraction has 21336 states and 29015 transitions. [2021-11-19 14:50:18,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-19 14:50:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 21336 states and 29015 transitions. [2021-11-19 14:50:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 14:50:18,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:18,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:18,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 14:50:18,526 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:18,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2048024899, now seen corresponding path program 1 times [2021-11-19 14:50:18,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:18,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607190674] [2021-11-19 14:50:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:18,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:18,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:18,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607190674] [2021-11-19 14:50:18,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607190674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:18,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:18,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 14:50:18,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341737117] [2021-11-19 14:50:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:18,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:50:18,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:50:18,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:18,676 INFO L87 Difference]: Start difference. First operand 21336 states and 29015 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-19 14:50:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:20,917 INFO L93 Difference]: Finished difference Result 53411 states and 73126 transitions. [2021-11-19 14:50:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:50:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2021-11-19 14:50:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:21,045 INFO L225 Difference]: With dead ends: 53411 [2021-11-19 14:50:21,046 INFO L226 Difference]: Without dead ends: 35844 [2021-11-19 14:50:21,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:50:21,081 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1028 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:21,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 2457 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:50:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35844 states. [2021-11-19 14:50:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35844 to 35842. [2021-11-19 14:50:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35842 states, 35841 states have (on average 1.3541474847241985) internal successors, (48534), 35841 states have internal predecessors, (48534), 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) [2021-11-19 14:50:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35842 states to 35842 states and 48534 transitions. [2021-11-19 14:50:23,271 INFO L78 Accepts]: Start accepts. Automaton has 35842 states and 48534 transitions. Word has length 81 [2021-11-19 14:50:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:23,272 INFO L470 AbstractCegarLoop]: Abstraction has 35842 states and 48534 transitions. [2021-11-19 14:50:23,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-19 14:50:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 35842 states and 48534 transitions. [2021-11-19 14:50:23,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-19 14:50:23,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:23,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:23,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 14:50:23,302 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash -963543678, now seen corresponding path program 1 times [2021-11-19 14:50:23,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:23,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265629870] [2021-11-19 14:50:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:23,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:23,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:23,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265629870] [2021-11-19 14:50:23,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265629870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:23,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:23,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 14:50:23,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144620712] [2021-11-19 14:50:23,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:23,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:50:23,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:23,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:50:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:50:23,463 INFO L87 Difference]: Start difference. First operand 35842 states and 48534 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-19 14:50:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:27,939 INFO L93 Difference]: Finished difference Result 97201 states and 132411 transitions. [2021-11-19 14:50:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:50:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2021-11-19 14:50:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:28,111 INFO L225 Difference]: With dead ends: 97201 [2021-11-19 14:50:28,112 INFO L226 Difference]: Without dead ends: 62631 [2021-11-19 14:50:28,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:50:28,185 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 3528 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:28,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3528 Valid, 775 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:50:28,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62631 states. [2021-11-19 14:50:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62631 to 62629. [2021-11-19 14:50:32,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62629 states, 62628 states have (on average 1.3544101679759852) internal successors, (84824), 62628 states have internal predecessors, (84824), 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) [2021-11-19 14:50:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62629 states to 62629 states and 84824 transitions. [2021-11-19 14:50:32,308 INFO L78 Accepts]: Start accepts. Automaton has 62629 states and 84824 transitions. Word has length 82 [2021-11-19 14:50:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:50:32,310 INFO L470 AbstractCegarLoop]: Abstraction has 62629 states and 84824 transitions. [2021-11-19 14:50:32,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-19 14:50:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 62629 states and 84824 transitions. [2021-11-19 14:50:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:50:32,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:50:32,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:50:32,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 14:50:32,355 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:50:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:50:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash 940732972, now seen corresponding path program 1 times [2021-11-19 14:50:32,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:50:32,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413993044] [2021-11-19 14:50:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:50:32,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:50:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:50:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:50:32,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:50:32,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413993044] [2021-11-19 14:50:32,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413993044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:50:32,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:50:32,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 14:50:32,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348586276] [2021-11-19 14:50:32,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:50:32,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:50:32,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:50:32,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:50:32,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:50:32,833 INFO L87 Difference]: Start difference. First operand 62629 states and 84824 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 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) [2021-11-19 14:50:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:50:49,237 INFO L93 Difference]: Finished difference Result 246224 states and 333261 transitions. [2021-11-19 14:50:49,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:50:49,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 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 83 [2021-11-19 14:50:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:50:49,809 INFO L225 Difference]: With dead ends: 246224 [2021-11-19 14:50:49,810 INFO L226 Difference]: Without dead ends: 218781 [2021-11-19 14:50:49,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:50:49,906 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 5446 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5446 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:50:49,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5446 Valid, 1616 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:50:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218781 states.