./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a --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 64bit --witnessprinter.graph.data.programhash 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 --- 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-b5237d8 [2022-11-21 09:06:58,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:06:58,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:06:58,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:06:58,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:06:58,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:06:58,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:06:58,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:06:58,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:06:58,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:06:58,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:06:58,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:06:58,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:06:58,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:06:58,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:06:58,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:06:58,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:06:58,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:06:58,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:06:58,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:06:58,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:06:58,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:06:58,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:06:58,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:06:58,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:06:58,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:06:58,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:06:58,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:06:58,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:06:58,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:06:58,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:06:58,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:06:58,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:06:58,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:06:58,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:06:58,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:06:58,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:06:58,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:06:58,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:06:58,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:06:58,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:06:58,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 09:06:58,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:06:58,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:06:58,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:06:58,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:06:58,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:06:58,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:06:58,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:06:58,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:06:58,643 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:06:58,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:06:58,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:06:58,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:06:58,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:06:58,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:06:58,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:06:58,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:06:58,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:06:58,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:06:58,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:06:58,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:06:58,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:06:58,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:06:58,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:06:58,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:06:58,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:06:58,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:06:58,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:06:58,648 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:06:58,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:06:58,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:06:58,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 [2022-11-21 09:06:58,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:06:58,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:06:58,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:06:58,950 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:06:58,950 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:06:58,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-21 09:07:01,996 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:07:02,238 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:07:02,239 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-21 09:07:02,252 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/data/8c0de0658/9749c778fc93472f9ee14f68105f2595/FLAG9b90abe9c [2022-11-21 09:07:02,281 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/data/8c0de0658/9749c778fc93472f9ee14f68105f2595 [2022-11-21 09:07:02,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:07:02,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:07:02,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:02,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:07:02,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:07:02,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:02,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b03c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02, skipping insertion in model container [2022-11-21 09:07:02,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:02,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:07:02,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:07:02,536 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_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-21 09:07:02,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:02,707 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:07:02,737 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_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-21 09:07:02,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:02,917 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:07:02,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02 WrapperNode [2022-11-21 09:07:02,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:02,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:02,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:07:02,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:07:02,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:02,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,021 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 683 [2022-11-21 09:07:03,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:03,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:07:03,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:07:03,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:07:03,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:07:03,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:07:03,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:07:03,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:07:03,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (1/1) ... [2022-11-21 09:07:03,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:03,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:07:03,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:07:03,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:07:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:07:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:07:03,541 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:07:03,544 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:07:13,712 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:07:13,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:07:13,719 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 09:07:13,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:13 BoogieIcfgContainer [2022-11-21 09:07:13,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:07:13,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:07:13,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:07:13,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:07:13,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:07:02" (1/3) ... [2022-11-21 09:07:13,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e42b012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:07:13, skipping insertion in model container [2022-11-21 09:07:13,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:02" (2/3) ... [2022-11-21 09:07:13,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e42b012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:07:13, skipping insertion in model container [2022-11-21 09:07:13,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:13" (3/3) ... [2022-11-21 09:07:13,733 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_state_machine.c [2022-11-21 09:07:13,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:07:13,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:07:13,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:07:13,815 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;@5f504f44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:07:13,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:07:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2022-11-21 09:07:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 09:07:13,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:13,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 09:07:13,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-21 09:07:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:07:13,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636939423] [2022-11-21 09:07:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:13,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:07:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:07:14,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 09:07:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 09:07:14,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 09:07:14,100 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 09:07:14,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 09:07:14,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:07:14,109 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 09:07:14,114 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 09:07:14,132 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-21 09:07:14,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:07:14 BoogieIcfgContainer [2022-11-21 09:07:14,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 09:07:14,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 09:07:14,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 09:07:14,141 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 09:07:14,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:13" (3/4) ... [2022-11-21 09:07:14,146 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 09:07:14,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 09:07:14,147 INFO L158 Benchmark]: Toolchain (without parser) took 11861.04ms. Allocated memory was 151.0MB in the beginning and 515.9MB in the end (delta: 364.9MB). Free memory was 107.3MB in the beginning and 386.8MB in the end (delta: -279.5MB). Peak memory consumption was 86.9MB. Max. memory is 16.1GB. [2022-11-21 09:07:14,148 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 151.0MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:07:14,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.01ms. Allocated memory is still 151.0MB. Free memory was 107.3MB in the beginning and 80.6MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-21 09:07:14,149 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.05ms. Allocated memory is still 151.0MB. Free memory was 80.6MB in the beginning and 73.0MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 09:07:14,150 INFO L158 Benchmark]: Boogie Preprocessor took 66.16ms. Allocated memory is still 151.0MB. Free memory was 73.0MB in the beginning and 68.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 09:07:14,151 INFO L158 Benchmark]: RCFGBuilder took 10632.45ms. Allocated memory was 151.0MB in the beginning and 515.9MB in the end (delta: 364.9MB). Free memory was 68.9MB in the beginning and 409.9MB in the end (delta: -341.0MB). Peak memory consumption was 269.3MB. Max. memory is 16.1GB. [2022-11-21 09:07:14,151 INFO L158 Benchmark]: TraceAbstraction took 415.75ms. Allocated memory is still 515.9MB. Free memory was 408.8MB in the beginning and 386.8MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-21 09:07:14,152 INFO L158 Benchmark]: Witness Printer took 5.36ms. Allocated memory is still 515.9MB. Free memory is still 386.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:07:14,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 151.0MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.01ms. Allocated memory is still 151.0MB. Free memory was 107.3MB in the beginning and 80.6MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.05ms. Allocated memory is still 151.0MB. Free memory was 80.6MB in the beginning and 73.0MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.16ms. Allocated memory is still 151.0MB. Free memory was 73.0MB in the beginning and 68.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 10632.45ms. Allocated memory was 151.0MB in the beginning and 515.9MB in the end (delta: 364.9MB). Free memory was 68.9MB in the beginning and 409.9MB in the end (delta: -341.0MB). Peak memory consumption was 269.3MB. Max. memory is 16.1GB. * TraceAbstraction took 415.75ms. Allocated memory is still 515.9MB. Free memory was 408.8MB in the beginning and 386.8MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.36ms. Allocated memory is still 515.9MB. Free memory is still 386.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 84, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 32); [L29] const SORT_32 msb_SORT_32 = (SORT_32)1 << (32 - 1); [L31] const SORT_1 var_4 = 0; [L32] const SORT_1 var_10 = 1; [L33] const SORT_32 var_33 = 0; [L34] const SORT_32 var_39 = 2; [L35] const SORT_32 var_51 = 1; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L40] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L42] SORT_1 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L43] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L44] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L50] SORT_32 state_34 = __VERIFIER_nondet_uint() & mask_SORT_32; [L51] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] SORT_1 init_6_arg_1 = var_4; [L54] state_5 = init_6_arg_1 [L55] SORT_1 init_15_arg_1 = var_10; [L56] state_14 = init_15_arg_1 [L57] SORT_1 init_17_arg_1 = var_4; [L58] state_16 = init_17_arg_1 [L59] SORT_1 init_19_arg_1 = var_4; [L60] state_18 = init_19_arg_1 [L61] SORT_1 init_21_arg_1 = var_4; [L62] state_20 = init_21_arg_1 [L63] SORT_1 init_23_arg_1 = var_4; [L64] state_22 = init_23_arg_1 [L65] SORT_1 init_25_arg_1 = var_4; [L66] state_24 = init_25_arg_1 [L67] SORT_1 init_27_arg_1 = var_4; [L68] state_26 = init_27_arg_1 [L69] SORT_1 init_29_arg_1 = var_4; [L70] state_28 = init_29_arg_1 [L71] SORT_1 init_31_arg_1 = var_10; [L72] state_30 = init_31_arg_1 [L73] SORT_32 init_35_arg_1 = var_33; [L74] state_34 = init_35_arg_1 [L75] SORT_1 init_37_arg_1 = var_4; [L76] state_36 = init_37_arg_1 VAL [init_15_arg_1=1, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_31_arg_1=1, init_35_arg_1=0, init_37_arg_1=0, init_6_arg_1=0, mask_SORT_1=1, mask_SORT_32=4294967295, msb_SORT_1=1, msb_SORT_32=2147483648, state_14=1, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_30=1, state_34=0, state_36=0, state_5=0, var_10=1, var_33=0, var_39=2, var_4=0, var_51=1] [L79] input_2 = __VERIFIER_nondet_uchar() [L80] input_3 = __VERIFIER_nondet_uchar() [L83] SORT_1 var_7_arg_0 = state_5; [L84] SORT_1 var_7 = ~var_7_arg_0; [L85] SORT_1 var_11_arg_0 = var_7; [L86] SORT_1 var_11 = ~var_11_arg_0; [L87] SORT_1 var_12_arg_0 = var_10; [L88] SORT_1 var_12_arg_1 = var_11; [L89] SORT_1 var_12 = var_12_arg_0 & var_12_arg_1; [L90] var_12 = var_12 & mask_SORT_1 [L91] SORT_1 bad_13_arg_0 = var_12; [L92] CALL __VERIFIER_assert(!(bad_13_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-21 09:07:14,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a --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 64bit --witnessprinter.graph.data.programhash 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 --- 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-b5237d8 [2022-11-21 09:07:16,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:07:16,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:07:16,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:07:16,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:07:16,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:07:16,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:07:16,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:07:16,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:07:16,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:07:16,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:07:16,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:07:16,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:07:16,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:07:16,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:07:16,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:07:16,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:07:16,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:07:16,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:07:16,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:07:16,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:07:16,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:07:16,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:07:16,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:07:16,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:07:16,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:07:16,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:07:16,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:07:16,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:07:16,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:07:16,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:07:16,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:07:16,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:07:16,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:07:16,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:07:16,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:07:16,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:07:16,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:07:16,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:07:16,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:07:16,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:07:16,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-21 09:07:16,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:07:16,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:07:16,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:07:16,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:07:16,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:07:16,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:07:16,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:07:16,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:07:16,930 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:07:16,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:07:16,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:07:16,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:07:16,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:07:16,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:07:16,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 09:07:16,933 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 09:07:16,933 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 09:07:16,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:07:16,934 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:07:16,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:07:16,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:07:16,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:07:16,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:07:16,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:16,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:07:16,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:07:16,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:07:16,937 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 09:07:16,937 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 09:07:16,937 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:07:16,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:07:16,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:07:16,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 09:07:16,939 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1077ae0441cb571883fc0ff708e55c30eb3995f278f5fee5452eacbd87485486 [2022-11-21 09:07:17,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:07:17,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:07:17,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:07:17,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:07:17,386 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:07:17,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-21 09:07:20,673 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:07:21,065 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:07:21,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c [2022-11-21 09:07:21,080 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/data/f1d1e4fbb/0d4bd27b426745bf842b169db7a2dbbb/FLAGda3cbac65 [2022-11-21 09:07:21,101 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/data/f1d1e4fbb/0d4bd27b426745bf842b169db7a2dbbb [2022-11-21 09:07:21,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:07:21,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:07:21,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:21,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:07:21,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:07:21,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:21,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686b7484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21, skipping insertion in model container [2022-11-21 09:07:21,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:21,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:07:21,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:07:21,430 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_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-21 09:07:21,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:21,599 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:07:21,625 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_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_state_machine.c[1107,1120] [2022-11-21 09:07:21,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:21,825 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:07:21,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21 WrapperNode [2022-11-21 09:07:21,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:21,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:21,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:07:21,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:07:21,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:21,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:21,951 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 683 [2022-11-21 09:07:21,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:21,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:07:21,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:07:21,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:07:21,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:21,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:21,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:22,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:22,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:22,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:22,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:22,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:22,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:07:22,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:07:22,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:07:22,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:07:22,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (1/1) ... [2022-11-21 09:07:22,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:22,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:07:22,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:07:22,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:07:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:07:22,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:07:22,460 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:07:22,462 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:07:23,485 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:07:23,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:07:23,493 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 09:07:23,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:23 BoogieIcfgContainer [2022-11-21 09:07:23,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:07:23,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:07:23,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:07:23,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:07:23,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:07:21" (1/3) ... [2022-11-21 09:07:23,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72117ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:07:23, skipping insertion in model container [2022-11-21 09:07:23,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:21" (2/3) ... [2022-11-21 09:07:23,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72117ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:07:23, skipping insertion in model container [2022-11-21 09:07:23,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:23" (3/3) ... [2022-11-21 09:07:23,505 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_state_machine.c [2022-11-21 09:07:23,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:07:23,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:07:23,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:07:23,583 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;@43ef221b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:07:23,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:07:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2022-11-21 09:07:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 09:07:23,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:23,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 09:07:23,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-21 09:07:23,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:07:23,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876996839] [2022-11-21 09:07:23,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:23,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:23,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:07:23,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:07:23,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 09:07:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:23,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 09:07:23,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:07:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:07:24,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:07:24,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:07:24,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876996839] [2022-11-21 09:07:24,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876996839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:07:24,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:07:24,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:07:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539732138] [2022-11-21 09:07:24,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:07:24,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 09:07:24,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:07:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 09:07:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 09:07:24,071 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-21 09:07:24,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:24,186 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-21 09:07:24,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 09:07:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-21 09:07:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:24,202 INFO L225 Difference]: With dead ends: 20 [2022-11-21 09:07:24,203 INFO L226 Difference]: Without dead ends: 11 [2022-11-21 09:07:24,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:07:24,212 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:24,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:07:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-21 09:07:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-21 09:07:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-11-21 09:07:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-21 09:07:24,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-21 09:07:24,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:24,245 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-21 09:07:24,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-21 09:07:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-21 09:07:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 09:07:24,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:24,247 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-21 09:07:24,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:07:24,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:24,458 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:24,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-21 09:07:24,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:07:24,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148747643] [2022-11-21 09:07:24,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:07:24,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:24,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:07:24,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:07:24,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 09:07:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:07:24,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 09:07:24,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:07:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:07:25,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:07:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:07:25,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:07:25,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148747643] [2022-11-21 09:07:25,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148747643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:07:25,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:07:25,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 09:07:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464157712] [2022-11-21 09:07:25,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:07:25,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 09:07:25,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:07:25,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 09:07:25,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:07:25,381 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-21 09:07:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:25,616 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-21 09:07:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 09:07:25,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 [2022-11-21 09:07:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:25,617 INFO L225 Difference]: With dead ends: 16 [2022-11-21 09:07:25,617 INFO L226 Difference]: Without dead ends: 14 [2022-11-21 09:07:25,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:07:25,619 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:25,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:07:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-21 09:07:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-21 09:07:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-21 09:07:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-21 09:07:25,624 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-21 09:07:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:25,624 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-21 09:07:25,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-21 09:07:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-21 09:07:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 09:07:25,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:25,625 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-21 09:07:25,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:07:25,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:25,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:25,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:25,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-21 09:07:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:07:25,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77767651] [2022-11-21 09:07:25,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:07:25,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:25,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:07:25,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:07:25,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 09:07:26,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:07:26,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:07:26,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-21 09:07:26,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:07:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:07:26,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:07:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:07:28,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:07:28,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77767651] [2022-11-21 09:07:28,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77767651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:07:28,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:07:28,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-21 09:07:28,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954406758] [2022-11-21 09:07:28,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:07:28,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:07:28,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:07:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:07:28,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:07:28,070 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2022-11-21 09:07:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:07:28,412 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-21 09:07:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 09:07:28,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 11 [2022-11-21 09:07:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:07:28,414 INFO L225 Difference]: With dead ends: 19 [2022-11-21 09:07:28,414 INFO L226 Difference]: Without dead ends: 17 [2022-11-21 09:07:28,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:07:28,416 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:07:28,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:07:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-21 09:07:28,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-21 09:07:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-21 09:07:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-21 09:07:28,421 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-21 09:07:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:07:28,421 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-21 09:07:28,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2022-11-21 09:07:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-21 09:07:28,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 09:07:28,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:07:28,422 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-21 09:07:28,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:07:28,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:28,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:07:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:07:28,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-21 09:07:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:07:28,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678699267] [2022-11-21 09:07:28,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:07:28,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:07:28,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:07:28,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:07:28,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 09:07:29,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 09:07:29,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:07:29,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 345 conjunts are in the unsatisfiable core [2022-11-21 09:07:29,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:07:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:07:40,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:08:02,937 WARN L233 SmtUtils]: Spent 17.30s on a formula simplification. DAG size of input: 522 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:09:02,861 WARN L233 SmtUtils]: Spent 43.47s on a formula simplification. DAG size of input: 978 DAG size of output: 977 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:09:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:04,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:09:04,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678699267] [2022-11-21 09:09:04,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678699267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:04,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:09:04,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 09:09:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690187793] [2022-11-21 09:09:04,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:04,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:09:04,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:09:04,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:09:04,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=187, Unknown=6, NotChecked=0, Total=240 [2022-11-21 09:09:04,142 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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) [2022-11-21 09:09:08,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:09:09,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 09:09:11,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:09:12,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 09:09:14,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:09:15,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 09:09:17,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:09:18,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 09:09:21,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:09:37,115 WARN L233 SmtUtils]: Spent 10.45s on a formula simplification. DAG size of input: 728 DAG size of output: 474 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:09:47,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:09:48,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 09:09:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:48,661 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-21 09:09:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:09:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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 14 [2022-11-21 09:09:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:48,662 INFO L225 Difference]: With dead ends: 22 [2022-11-21 09:09:48,663 INFO L226 Difference]: Without dead ends: 20 [2022-11-21 09:09:48,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 108.7s TimeCoverageRelationStatistics Valid=105, Invalid=349, Unknown=8, NotChecked=0, Total=462 [2022-11-21 09:09:48,664 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:48,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 37 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 21.5s Time] [2022-11-21 09:09:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-21 09:09:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-21 09:09:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 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) [2022-11-21 09:09:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-21 09:09:48,676 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-21 09:09:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:48,676 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-21 09:09:48,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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) [2022-11-21 09:09:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-21 09:09:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 09:09:48,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:48,678 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-21 09:09:48,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-21 09:09:48,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:48,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:48,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-21 09:09:48,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:09:48,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913019819] [2022-11-21 09:09:48,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 09:09:48,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:48,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:09:48,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:09:48,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 09:09:49,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 09:09:49,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:09:49,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 409 conjunts are in the unsatisfiable core [2022-11-21 09:09:49,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:52,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:11:09,692 WARN L233 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 795 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:11:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:11:09,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:11:09,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913019819] [2022-11-21 09:11:09,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913019819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:11:09,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:11:09,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-21 09:11:09,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397700078] [2022-11-21 09:11:09,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:11:09,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 09:11:09,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:11:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 09:11:09,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=131, Unknown=2, NotChecked=0, Total=182 [2022-11-21 09:11:09,940 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2022-11-21 09:11:10,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:10,986 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-21 09:11:10,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:11:10,987 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 17 [2022-11-21 09:11:10,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:10,988 INFO L225 Difference]: With dead ends: 25 [2022-11-21 09:11:10,988 INFO L226 Difference]: Without dead ends: 23 [2022-11-21 09:11:10,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 73.2s TimeCoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2022-11-21 09:11:10,989 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:10,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 28 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 09:11:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-21 09:11:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-21 09:11:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-11-21 09:11:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-21 09:11:11,003 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-11-21 09:11:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:11,004 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-21 09:11:11,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2022-11-21 09:11:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-21 09:11:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 09:11:11,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:11:11,005 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-11-21 09:11:11,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:11,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:11:11,206 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:11:11,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:11:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-11-21 09:11:11,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:11:11,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567049043] [2022-11-21 09:11:11,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 09:11:11,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:11:11,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:11:11,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:11:11,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-21 09:11:12,438 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-21 09:11:12,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:11:12,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 587 conjunts are in the unsatisfiable core [2022-11-21 09:11:12,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:11:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:11:19,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:11:45,103 WARN L233 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 574 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:13:58,572 WARN L233 SmtUtils]: Spent 1.83m on a formula simplification. DAG size of input: 673 DAG size of output: 467 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:14:27,617 WARN L233 SmtUtils]: Spent 23.33s on a formula simplification that was a NOOP. DAG size: 470 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:15:49,844 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 480 DAG size of output: 370 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:19:37,548 WARN L233 SmtUtils]: Spent 3.17m on a formula simplification. DAG size of input: 974 DAG size of output: 647 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:20:07,499 WARN L233 SmtUtils]: Spent 22.63s on a formula simplification that was a NOOP. DAG size: 650 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:20:40,950 WARN L233 SmtUtils]: Spent 30.74s on a formula simplification. DAG size of input: 657 DAG size of output: 654 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:20:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:20:41,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:20:41,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567049043] [2022-11-21 09:20:41,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567049043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:20:41,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:20:41,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2022-11-21 09:20:41,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031524269] [2022-11-21 09:20:41,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:20:41,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 09:20:41,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:20:41,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 09:20:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1006, Unknown=25, NotChecked=0, Total=1190 [2022-11-21 09:20:41,025 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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) [2022-11-21 09:20:46,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-21 09:21:21,759 WARN L233 SmtUtils]: Spent 29.55s on a formula simplification. DAG size of input: 1310 DAG size of output: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:21:21,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:21:21,761 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-11-21 09:21:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:21:21,762 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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 20 [2022-11-21 09:21:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:21:21,763 INFO L225 Difference]: With dead ends: 28 [2022-11-21 09:21:21,763 INFO L226 Difference]: Without dead ends: 26 [2022-11-21 09:21:21,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 576.2s TimeCoverageRelationStatistics Valid=240, Invalid=1375, Unknown=25, NotChecked=0, Total=1640 [2022-11-21 09:21:21,765 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 51 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:21:21,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 66 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 166 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-11-21 09:21:21,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-21 09:21:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-21 09:21:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2022-11-21 09:21:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-11-21 09:21:21,780 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2022-11-21 09:21:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:21:21,781 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-11-21 09:21:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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) [2022-11-21 09:21:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-11-21 09:21:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 09:21:21,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:21:21,782 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-21 09:21:21,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-21 09:21:21,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:21:21,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:21:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:21:21,983 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 6 times [2022-11-21 09:21:21,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:21:21,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936112672] [2022-11-21 09:21:21,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 09:21:21,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:21:21,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:21:21,987 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:21:21,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ed6427-a8fb-47c4-b377-14a653d7d4e2/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-21 09:21:23,392 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-21 09:21:23,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:21:23,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 3668 conjuncts, 594 conjunts are in the unsatisfiable core [2022-11-21 09:21:23,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:21:49,156 WARN L233 SmtUtils]: Spent 18.78s on a formula simplification. DAG size of input: 212 DAG size of output: 188 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:21:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:21:55,431 INFO L328 TraceCheckSpWp]: Computing backward predicates...