./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d32da3d6d63cd0b5044f81aaa321c86b8663ab47e67a0d6b64aca0030551d2e0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-15 00:36:55,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-15 00:36:55,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-15 00:36:55,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-15 00:36:55,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-15 00:36:55,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-15 00:36:55,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-15 00:36:55,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-15 00:36:55,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-15 00:36:55,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-15 00:36:55,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-15 00:36:55,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-15 00:36:55,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-15 00:36:55,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-15 00:36:55,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-15 00:36:55,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-15 00:36:55,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-15 00:36:55,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-15 00:36:55,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-15 00:36:55,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-15 00:36:55,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-15 00:36:55,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-15 00:36:55,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-15 00:36:55,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-15 00:36:55,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-15 00:36:55,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-15 00:36:55,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-15 00:36:55,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-15 00:36:55,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-15 00:36:55,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-15 00:36:55,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-15 00:36:55,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-15 00:36:55,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-15 00:36:55,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-15 00:36:55,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-15 00:36:55,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-15 00:36:55,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-15 00:36:55,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-15 00:36:55,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-15 00:36:55,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-15 00:36:55,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-15 00:36:55,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-12-15 00:36:55,172 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-15 00:36:55,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-15 00:36:55,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-15 00:36:55,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-15 00:36:55,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-15 00:36:55,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-15 00:36:55,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-15 00:36:55,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-15 00:36:55,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-15 00:36:55,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-15 00:36:55,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-15 00:36:55,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-15 00:36:55,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-15 00:36:55,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-15 00:36:55,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-15 00:36:55,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-15 00:36:55,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-15 00:36:55,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-15 00:36:55,182 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-15 00:36:55,182 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-15 00:36:55,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-15 00:36:55,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-15 00:36:55,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-15 00:36:55,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-15 00:36:55,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-15 00:36:55,183 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-15 00:36:55,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-15 00:36:55,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-15 00:36:55,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d32da3d6d63cd0b5044f81aaa321c86b8663ab47e67a0d6b64aca0030551d2e0 [2022-12-15 00:36:55,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-15 00:36:55,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-15 00:36:55,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-15 00:36:55,383 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-15 00:36:55,384 INFO L275 PluginConnector]: CDTParser initialized [2022-12-15 00:36:55,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c [2022-12-15 00:36:57,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-15 00:36:58,119 INFO L351 CDTParser]: Found 1 translation units. [2022-12-15 00:36:58,119 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c [2022-12-15 00:36:58,126 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/data/e307efcab/07e6e1205d1c4f2db9f6d534ab8ff215/FLAG4caef800b [2022-12-15 00:36:58,139 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/data/e307efcab/07e6e1205d1c4f2db9f6d534ab8ff215 [2022-12-15 00:36:58,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-15 00:36:58,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-15 00:36:58,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-15 00:36:58,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-15 00:36:58,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-15 00:36:58,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4ac455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58, skipping insertion in model container [2022-12-15 00:36:58,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-15 00:36:58,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-15 00:36:58,282 WARN L237 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_cc415bf2-08a4-4a56-ae08-85ed01f4510a/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c[524,537] [2022-12-15 00:36:58,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-15 00:36:58,301 INFO L203 MainTranslator]: Completed pre-run [2022-12-15 00:36:58,310 WARN L237 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_cc415bf2-08a4-4a56-ae08-85ed01f4510a/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c[524,537] [2022-12-15 00:36:58,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-15 00:36:58,324 INFO L208 MainTranslator]: Completed translation [2022-12-15 00:36:58,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58 WrapperNode [2022-12-15 00:36:58,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-15 00:36:58,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-15 00:36:58,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-15 00:36:58,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-15 00:36:58,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,348 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2022-12-15 00:36:58,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-15 00:36:58,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-15 00:36:58,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-15 00:36:58,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-15 00:36:58,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-15 00:36:58,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-15 00:36:58,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-15 00:36:58,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-15 00:36:58,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-15 00:36:58,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/z3 [2022-12-15 00:36:58,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-15 00:36:58,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc415bf2-08a4-4a56-ae08-85ed01f4510a/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-15 00:36:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-15 00:36:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-15 00:36:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-15 00:36:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-15 00:36:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-15 00:36:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-15 00:36:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-15 00:36:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-15 00:36:58,471 INFO L235 CfgBuilder]: Building ICFG [2022-12-15 00:36:58,473 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-15 00:36:58,573 INFO L276 CfgBuilder]: Performing block encoding [2022-12-15 00:36:58,594 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-15 00:36:58,594 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-15 00:36:58,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:36:58 BoogieIcfgContainer [2022-12-15 00:36:58,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-15 00:36:58,596 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-15 00:36:58,596 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-15 00:36:58,604 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-15 00:36:58,604 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:36:58" (1/1) ... [2022-12-15 00:36:58,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-15 00:36:58,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:36:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 27 transitions. [2022-12-15 00:36:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-12-15 00:36:58,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-15 00:36:58,654 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:36:58,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:36:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:36:58,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-15 00:36:58,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:36:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-15 00:36:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:36:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 25 states and 33 transitions. [2022-12-15 00:36:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-12-15 00:36:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-15 00:36:59,484 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:36:59,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:36:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:36:59,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-15 00:36:59,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:37:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-15 00:37:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:37:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 29 states and 39 transitions. [2022-12-15 00:37:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-12-15 00:37:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:37:01,559 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:37:01,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:37:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:37:01,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:37:01,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:37:12,169 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:37:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:37:41,385 WARN L233 SmtUtils]: Spent 20.09s on a formula simplification. DAG size of input: 37 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-15 00:37:55,883 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-15 00:38:15,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-15 00:38:21,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2022-12-15 00:38:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:38:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:38:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:38:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:38:22,457 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:38:22,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:38:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:38:22,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:38:22,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:38:32,573 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:38:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:38:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:38:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:38:53,493 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:38:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:38:53,494 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:38:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:38:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:38:53,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:38:53,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:39:02,927 WARN L233 SmtUtils]: Spent 9.31s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:39:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:39:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:39:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:39:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:39:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:39:33,626 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:39:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:39:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:39:33,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:39:33,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:39:44,012 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:40:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:40:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:40:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:40:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:40:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:40:06,508 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:40:06,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:40:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:40:06,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:40:06,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:40:15,324 WARN L233 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:40:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:40:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:40:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:40:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:40:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:40:46,558 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:40:46,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:40:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:40:46,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:40:46,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:40:55,102 WARN L233 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:41:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:41:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:41:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:41:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:41:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:41:12,392 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:41:12,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:41:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:41:12,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:41:12,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:41:22,320 WARN L233 SmtUtils]: Spent 9.78s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:41:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:41:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:41:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:41:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:41:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:41:50,966 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:41:50,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:41:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:41:50,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:41:50,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:42:00,946 WARN L233 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:42:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:42:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:42:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:42:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:42:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:42:27,225 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:42:27,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:42:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:42:27,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:42:27,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:42:37,296 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:43:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:43:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:43:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:43:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:43:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:43:07,921 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:43:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:43:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:43:07,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:43:07,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:43:16,517 WARN L233 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:43:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:43:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:43:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:43:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:43:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:43:46,054 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:43:46,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:43:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:43:46,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:43:46,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:43:56,107 WARN L233 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:44:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:44:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:44:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:44:29,414 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:44:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:44:29,414 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:44:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:44:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:44:29,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:44:29,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:44:39,193 WARN L233 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:44:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:45:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:45:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:45:01,912 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:45:01,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:45:01,913 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:45:01,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:45:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:45:01,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:45:01,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:45:09,584 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:45:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:45:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:45:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:45:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:45:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:45:36,957 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:45:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:45:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:45:36,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:45:36,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:45:45,230 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:46:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:46:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:46:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:46:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:46:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:46:17,615 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:46:17,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:46:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:46:17,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:46:17,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:46:28,100 WARN L233 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:46:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:46:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:46:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:46:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:46:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:46:38,019 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:46:38,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:46:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:46:38,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:46:38,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:46:48,164 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:47:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:47:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:47:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:47:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:47:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:47:06,436 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:47:06,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:47:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:47:06,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:47:06,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:47:15,165 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:47:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:47:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:47:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:47:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:47:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:47:48,029 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:47:48,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:47:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:47:48,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:47:48,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:47:57,592 WARN L233 SmtUtils]: Spent 9.41s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:48:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:48:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:48:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:48:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:48:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:48:18,903 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:48:18,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:48:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:48:18,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:48:18,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:48:26,792 WARN L233 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:48:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:48:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:48:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:48:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:48:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:48:50,103 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:48:50,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:48:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:48:50,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:48:50,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:48:59,360 WARN L233 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:49:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:49:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:49:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:49:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:49:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:49:24,375 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:49:24,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:49:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:49:24,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:49:24,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:49:32,398 WARN L233 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:49:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:50:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:50:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:50:00,134 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:50:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:50:00,135 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:50:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:50:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:50:00,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:50:00,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:50:08,084 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:50:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:50:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:50:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:50:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:50:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:50:29,919 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:50:29,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:50:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:50:29,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:50:29,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:50:40,065 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:51:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:51:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:51:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:51:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:51:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:51:09,034 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:51:09,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:51:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:51:09,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:51:09,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:51:17,339 WARN L233 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:51:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:51:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:51:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:51:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:51:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:51:44,715 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:51:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:51:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:51:44,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:51:44,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-15 00:51:54,235 WARN L233 SmtUtils]: Spent 9.43s on a formula simplification. DAG size of input: 10 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-15 00:52:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-15 00:52:22,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-15 00:52:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 37 states and 58 transitions. [2022-12-15 00:52:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 58 transitions. [2022-12-15 00:52:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-15 00:52:22,052 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-15 00:52:22,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-15 00:52:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-15 00:52:22,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-15 00:52:22,086 INFO L286 TraceCheckSpWp]: Computing forward predicates...