./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/sum02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/sum02-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8 --- 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-38b53e6 [2022-11-25 17:52:25,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:52:25,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:52:25,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:52:25,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:52:25,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:52:25,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:52:25,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:52:25,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:52:25,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:52:25,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:52:25,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:52:25,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:52:25,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:52:25,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:52:25,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:52:25,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:52:25,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:52:25,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:52:25,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:52:25,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:52:25,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:52:25,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:52:25,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:52:25,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:52:25,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:52:25,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:52:25,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:52:25,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:52:25,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:52:25,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:52:25,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:52:25,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:52:25,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:52:25,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:52:25,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:52:25,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:52:25,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:52:25,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:52:25,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:52:25,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:52:25,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:52:25,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:52:25,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:52:25,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:52:25,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:52:25,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:52:25,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:52:25,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:52:25,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:52:25,298 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:52:25,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:52:25,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:52:25,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:52:25,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:52:25,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:52:25,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:52:25,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:52:25,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:52:25,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:52:25,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:52:25,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:52:25,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:52:25,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:52:25,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:52:25,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:52:25,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:25,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:52:25,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:52:25,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:52:25,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:52:25,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:52:25,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:52:25,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:52:25,305 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:52:25,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:52:25,306 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8 [2022-11-25 17:52:25,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:52:25,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:52:25,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:52:25,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:52:25,610 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:52:25,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/bitvector/sum02-2.c [2022-11-25 17:52:28,830 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:52:29,047 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:52:29,047 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/sv-benchmarks/c/bitvector/sum02-2.c [2022-11-25 17:52:29,054 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/data/109a9e2f5/12a91898929647abb879a31e3ba0a5b7/FLAGd4525d033 [2022-11-25 17:52:29,407 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/data/109a9e2f5/12a91898929647abb879a31e3ba0a5b7 [2022-11-25 17:52:29,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:52:29,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:52:29,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:29,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:52:29,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:52:29,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f68d410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29, skipping insertion in model container [2022-11-25 17:52:29,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:52:29,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:52:29,603 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_48048d80-811d-472b-b51b-360411ea2095/sv-benchmarks/c/bitvector/sum02-2.c[711,724] [2022-11-25 17:52:29,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:29,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:52:29,649 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_48048d80-811d-472b-b51b-360411ea2095/sv-benchmarks/c/bitvector/sum02-2.c[711,724] [2022-11-25 17:52:29,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:29,671 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:52:29,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29 WrapperNode [2022-11-25 17:52:29,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:29,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:29,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:52:29,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:52:29,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,707 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2022-11-25 17:52:29,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:29,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:52:29,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:52:29,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:52:29,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,729 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:52:29,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:52:29,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:52:29,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:52:29,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (1/1) ... [2022-11-25 17:52:29,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:29,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:29,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:29,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:52:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:52:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:52:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:52:29,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:52:29,888 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:52:29,890 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:52:30,017 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:52:30,022 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:52:30,023 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:52:30,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:30 BoogieIcfgContainer [2022-11-25 17:52:30,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:52:30,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:52:30,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:52:30,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:52:30,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:52:29" (1/3) ... [2022-11-25 17:52:30,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6d1ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:30, skipping insertion in model container [2022-11-25 17:52:30,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:29" (2/3) ... [2022-11-25 17:52:30,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6d1ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:30, skipping insertion in model container [2022-11-25 17:52:30,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:30" (3/3) ... [2022-11-25 17:52:30,035 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02-2.c [2022-11-25 17:52:30,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:52:30,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:52:30,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:52:30,156 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@409e857d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:52:30,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:52:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 17:52:30,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:30,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:30,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:30,191 INFO L85 PathProgramCache]: Analyzing trace with hash 119658891, now seen corresponding path program 1 times [2022-11-25 17:52:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:30,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982087703] [2022-11-25 17:52:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:30,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:30,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982087703] [2022-11-25 17:52:30,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 17:52:30,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963069537] [2022-11-25 17:52:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:30,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:30,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:30,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:30,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:52:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:30,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:52:30,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:30,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:52:30,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963069537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:30,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:30,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:52:30,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962970406] [2022-11-25 17:52:30,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:30,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:52:30,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:30,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:52:30,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:52:30,658 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:30,678 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-11-25 17:52:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:52:30,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 17:52:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:30,692 INFO L225 Difference]: With dead ends: 25 [2022-11-25 17:52:30,692 INFO L226 Difference]: Without dead ends: 10 [2022-11-25 17:52:30,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:52:30,700 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:30,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:52:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-25 17:52:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-25 17:52:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-25 17:52:30,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2022-11-25 17:52:30,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:30,743 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-25 17:52:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:30,743 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-25 17:52:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 17:52:30,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:30,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:30,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:30,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:30,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:30,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:30,953 INFO L85 PathProgramCache]: Analyzing trace with hash 176738447, now seen corresponding path program 1 times [2022-11-25 17:52:30,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:30,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768939336] [2022-11-25 17:52:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:30,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:30,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:52:30,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224061258] [2022-11-25 17:52:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:30,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:30,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:30,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:31,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:52:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:31,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:52:31,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:31,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:52:31,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:31,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768939336] [2022-11-25 17:52:31,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:52:31,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224061258] [2022-11-25 17:52:31,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224061258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:31,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:31,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:52:31,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034541867] [2022-11-25 17:52:31,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:31,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:52:31,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:52:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:52:31,222 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:31,265 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-25 17:52:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:52:31,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 17:52:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:31,268 INFO L225 Difference]: With dead ends: 15 [2022-11-25 17:52:31,268 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 17:52:31,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:52:31,270 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:31,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:52:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 17:52:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-25 17:52:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-11-25 17:52:31,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2022-11-25 17:52:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:31,279 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-11-25 17:52:31,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-11-25 17:52:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 17:52:31,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:31,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:31,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:31,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 17:52:31,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:31,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1899811727, now seen corresponding path program 1 times [2022-11-25 17:52:31,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:31,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501768955] [2022-11-25 17:52:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:31,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:31,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:52:31,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823551247] [2022-11-25 17:52:31,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:31,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:31,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:31,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:31,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:52:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:31,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:52:31,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:31,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:32,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501768955] [2022-11-25 17:52:32,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:52:32,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823551247] [2022-11-25 17:52:32,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823551247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:32,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:52:32,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2022-11-25 17:52:32,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148138507] [2022-11-25 17:52:32,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:32,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:52:32,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:32,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:52:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:52:32,102 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:32,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:32,704 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-25 17:52:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:52:32,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 17:52:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:32,707 INFO L225 Difference]: With dead ends: 17 [2022-11-25 17:52:32,707 INFO L226 Difference]: Without dead ends: 13 [2022-11-25 17:52:32,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:52:32,710 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:32,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:52:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-25 17:52:32,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-25 17:52:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-25 17:52:32,725 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2022-11-25 17:52:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:32,726 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-25 17:52:32,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-25 17:52:32,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 17:52:32,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:32,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:32,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:32,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:32,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash -304736301, now seen corresponding path program 2 times [2022-11-25 17:52:32,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:32,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757625648] [2022-11-25 17:52:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:32,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:32,967 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:52:32,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650270513] [2022-11-25 17:52:32,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:52:32,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:32,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:32,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:52:33,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:52:33,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:52:33,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 17:52:33,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:33,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:53:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:53:16,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:16,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757625648] [2022-11-25 17:53:16,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:53:16,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650270513] [2022-11-25 17:53:16,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650270513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:53:16,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:53:16,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2022-11-25 17:53:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048518337] [2022-11-25 17:53:16,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:53:16,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:53:16,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:53:16,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=202, Unknown=8, NotChecked=0, Total=272 [2022-11-25 17:53:16,423 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:53:20,583 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296)) (.cse8 (mod |c_ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (let ((.cse0 (= .cse8 0)) (.cse1 (= .cse8 (mod (div (mod (+ (* .cse2 .cse2) .cse2) 18446744073709551616) 2) 18446744073709551616))) (.cse3 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or .cse0 .cse1 (<= (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) .cse2)) (or .cse0 .cse1 (<= .cse3 .cse2)) (let ((.cse4 (mod (+ .cse3 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (= .cse4 0) (forall ((|aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67| Int) (|aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67| Int) (|aux_div_aux_mod_ULTIMATE.start_main_~n~0#1_45_56| Int)) (let ((.cse5 (* 4294967296 |aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67|))) (let ((.cse7 (+ .cse5 |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67|)) (.cse6 (+ .cse5 (* 4294967296 |aux_div_aux_mod_ULTIMATE.start_main_~n~0#1_45_56|) |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67|))) (or (= (mod (div (mod (+ .cse5 (* 8589934592 |aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67| |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67|) (* |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67| |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67|) |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67|) 18446744073709551616) 2) 18446744073709551616) .cse4) (<= 4294967296 .cse6) (<= (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67|) (< .cse7 0) (<= 4294967296 .cse7) (< .cse6 .cse3) (> 0 |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~n~0#1_45_56_67|)))))))))) is different from true [2022-11-25 17:53:34,224 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:53:44,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 17:54:07,688 WARN L233 SmtUtils]: Spent 13.51s on a formula simplification. DAG size of input: 49 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:54:10,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 17:54:12,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 17:54:35,065 WARN L233 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 52 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:54:43,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:54:43,494 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-25 17:54:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:54:43,495 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 17:54:43,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:54:43,496 INFO L225 Difference]: With dead ends: 27 [2022-11-25 17:54:43,496 INFO L226 Difference]: Without dead ends: 19 [2022-11-25 17:54:43,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 108.1s TimeCoverageRelationStatistics Valid=138, Invalid=396, Unknown=22, NotChecked=44, Total=600 [2022-11-25 17:54:43,498 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:54:43,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 39 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 3 Unknown, 1 Unchecked, 12.3s Time] [2022-11-25 17:54:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-25 17:54:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-25 17:54:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-11-25 17:54:43,506 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2022-11-25 17:54:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:54:43,507 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-11-25 17:54:43,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-11-25 17:54:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 17:54:43,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:54:43,508 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:54:43,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 17:54:43,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:43,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:54:43,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash 822048505, now seen corresponding path program 3 times [2022-11-25 17:54:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:43,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959956109] [2022-11-25 17:54:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:43,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:43,740 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:54:43,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422954809] [2022-11-25 17:54:43,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:54:43,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:43,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:43,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:54:43,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:54:43,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 17:54:43,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:54:43,955 WARN L261 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 17:54:43,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:54:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:44,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:56:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:56:18,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:56:18,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959956109] [2022-11-25 17:56:18,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:56:18,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422954809] [2022-11-25 17:56:18,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422954809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:56:18,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:56:18,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2022-11-25 17:56:18,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226106442] [2022-11-25 17:56:18,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:56:18,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-25 17:56:18,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:56:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-25 17:56:18,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=668, Unknown=7, NotChecked=0, Total=812 [2022-11-25 17:56:18,907 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:20,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 17:56:22,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:56:24,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:56:57,160 WARN L233 SmtUtils]: Spent 22.02s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:56:59,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 17:57:16,545 WARN L233 SmtUtils]: Spent 10.80s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:57:39,411 WARN L233 SmtUtils]: Spent 14.11s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:57:41,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 17:59:07,872 WARN L233 SmtUtils]: Spent 1.35m on a formula simplification. DAG size of input: 64 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:59:09,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 17:59:22,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 18:00:15,844 WARN L233 SmtUtils]: Spent 44.82s on a formula simplification. DAG size of input: 66 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:00:32,300 WARN L233 SmtUtils]: Spent 9.47s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:00:34,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:00:36,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:00:58,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 18:01:22,801 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:01:25,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:01:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:25,554 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-25 18:01:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 18:01:25,554 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-25 18:01:25,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:25,555 INFO L225 Difference]: With dead ends: 37 [2022-11-25 18:01:25,555 INFO L226 Difference]: Without dead ends: 31 [2022-11-25 18:01:25,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 329.0s TimeCoverageRelationStatistics Valid=366, Invalid=1413, Unknown=27, NotChecked=0, Total=1806 [2022-11-25 18:01:25,558 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 48 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 31 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:25,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 53 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 209 Invalid, 10 Unknown, 0 Unchecked, 33.4s Time] [2022-11-25 18:01:25,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-25 18:01:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-25 18:01:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:01:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-11-25 18:01:25,572 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 18 [2022-11-25 18:01:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:25,572 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-11-25 18:01:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:01:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-11-25 18:01:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 18:01:25,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:25,574 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:25,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 18:01:25,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:25,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:25,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:25,780 INFO L85 PathProgramCache]: Analyzing trace with hash -803719227, now seen corresponding path program 4 times [2022-11-25 18:01:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:25,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667967906] [2022-11-25 18:01:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:25,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:01:25,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400523972] [2022-11-25 18:01:25,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:01:25,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:01:25,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:01:25,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48048d80-811d-472b-b51b-360411ea2095/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:01:26,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:01:26,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:01:26,226 WARN L261 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-25 18:01:26,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:01:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:27,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:05:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 104 refuted. 17 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:20,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667967906] [2022-11-25 18:05:20,492 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:05:20,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400523972] [2022-11-25 18:05:20,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400523972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:05:20,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:05:20,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 55 [2022-11-25 18:05:20,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861023370] [2022-11-25 18:05:20,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:05:20,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-25 18:05:20,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-25 18:05:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=2535, Unknown=32, NotChecked=0, Total=2970 [2022-11-25 18:05:20,496 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:05:21,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:24,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:26,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:28,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:31,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:33,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:34,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:37,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:40,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:42,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:45,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:47,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:49,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:52,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:54,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:56,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:05:58,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:06:01,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 18:06:03,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []