./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9 --witnessprinter.witness.filename witness --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 5343b340ea8da46bc6acd6408dd3dbd3223330cf8901c5f3b9950638a460ce9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 00:19:49,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 00:19:49,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-12-03 00:19:49,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 00:19:49,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 00:19:49,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 00:19:49,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 00:19:49,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 00:19:49,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 00:19:49,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 00:19:49,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 00:19:49,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 00:19:49,366 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 00:19:49,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 00:19:49,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 00:19:49,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 00:19:49,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 00:19:49,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 00:19:49,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 00:19:49,370 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 00:19:49,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 00:19:49,371 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 00:19:49,371 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 00:19:49,372 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 00:19:49,372 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 00:19:49,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 00:19:49,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:19:49,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 00:19:49,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 00:19:49,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 00:19:49,375 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 00:19:49,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 00:19:49,375 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 00:19:49,376 INFO L153 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_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5343b340ea8da46bc6acd6408dd3dbd3223330cf8901c5f3b9950638a460ce9a [2023-12-03 00:19:49,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 00:19:49,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 00:19:49,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 00:19:49,611 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 00:19:49,611 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 00:19:49,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c [2023-12-03 00:19:52,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 00:19:52,553 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 00:19:52,553 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c [2023-12-03 00:19:52,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/data/f386be160/204ad7bfa42c4c67b4ad5277903725b5/FLAGefc89c658 [2023-12-03 00:19:52,571 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/data/f386be160/204ad7bfa42c4c67b4ad5277903725b5 [2023-12-03 00:19:52,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 00:19:52,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 00:19:52,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 00:19:52,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 00:19:52,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 00:19:52,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d549497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52, skipping insertion in model container [2023-12-03 00:19:52,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 00:19:52,728 WARN L240 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_75b630bb-f728-49e7-ab04-c5aac1393dbb/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c[535,548] [2023-12-03 00:19:52,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:19:52,757 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 00:19:52,777 WARN L240 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_75b630bb-f728-49e7-ab04-c5aac1393dbb/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c[535,548] [2023-12-03 00:19:52,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 00:19:52,801 INFO L206 MainTranslator]: Completed translation [2023-12-03 00:19:52,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52 WrapperNode [2023-12-03 00:19:52,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 00:19:52,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 00:19:52,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 00:19:52,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 00:19:52,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,838 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-12-03 00:19:52,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 00:19:52,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 00:19:52,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 00:19:52,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 00:19:52,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 00:19:52,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 00:19:52,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 00:19:52,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 00:19:52,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:19:52" (1/1) ... [2023-12-03 00:19:52,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 00:19:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 00:19:52,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 00:19:52,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b630bb-f728-49e7-ab04-c5aac1393dbb/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 00:19:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 00:19:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-03 00:19:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-03 00:19:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 00:19:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 00:19:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 00:19:52,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-03 00:19:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-03 00:19:52,991 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 00:19:52,993 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 00:19:53,151 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 00:19:53,179 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 00:19:53,179 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-03 00:19:53,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:19:53 BoogieIcfgContainer [2023-12-03 00:19:53,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 00:19:53,182 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 00:19:53,182 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 00:19:53,190 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 00:19:53,191 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:19:53" (1/1) ... [2023-12-03 00:19:53,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 00:19:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:19:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2023-12-03 00:19:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2023-12-03 00:19:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-03 00:19:53,253 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:19:53,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:19:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:19:53,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-03 00:19:53,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:19:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-03 00:19:56,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-03 00:19:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:19:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 31 states and 46 transitions. [2023-12-03 00:19:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 46 transitions. [2023-12-03 00:19:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-03 00:19:56,575 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:19:56,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:19:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:19:56,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-03 00:19:56,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:19:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-03 00:19:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:19:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 35 states and 54 transitions. [2023-12-03 00:19:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 54 transitions. [2023-12-03 00:19:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-03 00:19:59,038 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:19:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:19:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:19:59,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-03 00:19:59,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:19:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-03 00:19:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:19:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 37 states and 55 transitions. [2023-12-03 00:19:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2023-12-03 00:19:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-03 00:19:59,153 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:19:59,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:19:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:19:59,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-03 00:19:59,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:19:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-03 00:19:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:19:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 40 states and 58 transitions. [2023-12-03 00:19:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2023-12-03 00:19:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-03 00:19:59,314 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:19:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:19:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:19:59,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-03 00:19:59,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:19:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-03 00:20:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:20:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 46 states and 68 transitions. [2023-12-03 00:20:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 68 transitions. [2023-12-03 00:20:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-03 00:20:00,654 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:20:00,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:20:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:20:00,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-03 00:20:00,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:20:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-03 00:21:05,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-03 00:21:07,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-03 00:21:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:21:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 55 states and 89 transitions. [2023-12-03 00:21:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 89 transitions. [2023-12-03 00:21:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-03 00:21:12,356 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:21:12,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:21:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:21:12,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-03 00:21:12,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:21:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-03 00:21:33,548 WARN L293 SmtUtils]: Spent 20.09s on a formula simplification. DAG size of input: 33 DAG size of output: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 00:21:47,074 WARN L293 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 00:21:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:21:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 58 states and 91 transitions. [2023-12-03 00:21:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 91 transitions. [2023-12-03 00:21:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-03 00:21:47,648 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:21:47,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:21:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:21:47,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-03 00:21:47,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:22:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-03 00:22:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:22:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 61 states and 97 transitions. [2023-12-03 00:22:54,066 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 97 transitions. [2023-12-03 00:22:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-03 00:22:54,067 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:22:54,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:22:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:22:54,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-03 00:22:54,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:22:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-03 00:23:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:23:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 64 states and 102 transitions. [2023-12-03 00:23:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 102 transitions. [2023-12-03 00:23:06,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-03 00:23:06,481 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:23:06,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:23:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:23:06,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-03 00:23:06,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:23:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-03 00:25:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:25:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 67 states and 108 transitions. [2023-12-03 00:25:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 108 transitions. [2023-12-03 00:25:04,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-03 00:25:04,964 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:25:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:25:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:25:05,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-03 00:25:05,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:25:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-03 00:28:14,755 WARN L293 SmtUtils]: Spent 47.28s on a formula simplification. DAG size of input: 44 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 00:29:50,080 WARN L293 SmtUtils]: Spent 15.97s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 00:29:51,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-03 00:29:57,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-03 00:30:33,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-03 00:30:38,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-03 00:31:18,713 WARN L293 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 00:31:37,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-03 00:31:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:31:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 82 states and 143 transitions. [2023-12-03 00:31:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 143 transitions. [2023-12-03 00:31:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-03 00:31:47,809 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:31:47,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:31:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:31:47,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-03 00:31:47,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:32:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-03 00:32:30,634 WARN L293 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 68 DAG size of output: 51 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 00:33:22,567 WARN L293 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 77 DAG size of output: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-03 00:33:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:33:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 85 states and 149 transitions. [2023-12-03 00:33:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 149 transitions. [2023-12-03 00:33:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-03 00:33:47,836 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:33:47,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:33:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:33:47,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-03 00:33:47,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:34:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-03 00:34:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:34:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 88 states and 154 transitions. [2023-12-03 00:34:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 154 transitions. [2023-12-03 00:34:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-03 00:34:48,623 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:34:48,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:34:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:34:48,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-03 00:34:48,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 00:34:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-03 00:35:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 00:35:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 89 states and 155 transitions. [2023-12-03 00:35:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 155 transitions. [2023-12-03 00:35:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-03 00:35:08,279 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 00:35:08,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 00:35:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 00:35:08,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-03 00:35:08,345 INFO L285 TraceCheckSpWp]: Computing forward predicates...