./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:17:47,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:17:47,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:17:47,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:17:47,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:17:47,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:17:47,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:17:47,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:17:47,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:17:47,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:17:47,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:17:47,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:17:47,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:17:47,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:17:47,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:17:47,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:17:47,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:17:47,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:17:47,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:17:47,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:17:47,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:17:47,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:17:47,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:17:47,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:17:47,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:17:47,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:17:47,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:17:47,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:17:47,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:17:47,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:17:47,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:17:47,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:17:47,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:17:47,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:17:47,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:17:47,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:17:47,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:17:47,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:17:47,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:17:47,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:17:47,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:17:47,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:17:47,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:17:47,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:17:47,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:17:47,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:17:47,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:17:47,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:17:47,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:17:47,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:17:47,676 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:17:47,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:17:47,678 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:17:47,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:17:47,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:17:47,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:17:47,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:17:47,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:17:47,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:17:47,679 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:17:47,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:17:47,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:17:47,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:17:47,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:17:47,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:17:47,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:17:47,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:17:47,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:17:47,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:17:47,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:17:47,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:17:47,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:17:47,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:17:47,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:17:47,683 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:17:47,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:17:47,684 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c [2022-11-25 18:17:47,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:17:48,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:17:48,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:17:48,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:17:48,030 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:17:48,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-25 18:17:51,130 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:17:51,374 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:17:51,374 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-25 18:17:51,383 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/data/bec600e4b/a0f3d4adeb7e47369da994344a33310b/FLAG1640032c6 [2022-11-25 18:17:51,724 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/data/bec600e4b/a0f3d4adeb7e47369da994344a33310b [2022-11-25 18:17:51,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:17:51,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:17:51,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:17:51,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:17:51,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:17:51,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:51" (1/1) ... [2022-11-25 18:17:51,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e96c0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:51, skipping insertion in model container [2022-11-25 18:17:51,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:51" (1/1) ... [2022-11-25 18:17:51,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:17:51,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:17:52,005 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-25 18:17:52,011 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-25 18:17:52,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:17:52,069 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:17:52,085 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-25 18:17:52,087 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-25 18:17:52,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:17:52,137 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:17:52,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52 WrapperNode [2022-11-25 18:17:52,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:17:52,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:17:52,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:17:52,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:17:52,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,188 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 187 [2022-11-25 18:17:52,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:17:52,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:17:52,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:17:52,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:17:52,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:17:52,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:17:52,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:17:52,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:17:52,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (1/1) ... [2022-11-25 18:17:52,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:17:52,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:17:52,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:17:52,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:17:52,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:17:52,339 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-25 18:17:52,340 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-25 18:17:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:17:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:17:52,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:17:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 18:17:52,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 18:17:52,424 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:17:52,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:17:52,969 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:17:52,976 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:17:52,976 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 18:17:52,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:52 BoogieIcfgContainer [2022-11-25 18:17:52,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:17:52,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:17:52,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:17:52,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:17:52,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:17:51" (1/3) ... [2022-11-25 18:17:52,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c332ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:17:52, skipping insertion in model container [2022-11-25 18:17:52,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:52" (2/3) ... [2022-11-25 18:17:52,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c332ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:17:52, skipping insertion in model container [2022-11-25 18:17:52,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:52" (3/3) ... [2022-11-25 18:17:52,987 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_3a.c.cil.c [2022-11-25 18:17:53,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:17:53,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:17:53,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:17:53,085 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;@72cb95cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:17:53,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:17:53,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 76 states have internal predecessors, (117), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:17:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 18:17:53,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:17:53,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:17:53,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:17:53,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:17:53,104 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times [2022-11-25 18:17:53,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:17:53,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122938100] [2022-11-25 18:17:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:17:53,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:17:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:17:53,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:17:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:17:53,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:17:53,254 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:17:53,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-25 18:17:53,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-25 18:17:53,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:17:53,264 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 18:17:53,274 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:17:53,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:17:53 BoogieIcfgContainer [2022-11-25 18:17:53,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:17:53,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:17:53,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:17:53,300 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:17:53,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:52" (3/4) ... [2022-11-25 18:17:53,305 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:17:53,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:17:53,307 INFO L158 Benchmark]: Toolchain (without parser) took 1578.97ms. Allocated memory is still 159.4MB. Free memory was 131.5MB in the beginning and 101.7MB in the end (delta: 29.7MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2022-11-25 18:17:53,308 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:17:53,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.71ms. Allocated memory is still 159.4MB. Free memory was 131.5MB in the beginning and 116.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:17:53,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.41ms. Allocated memory is still 159.4MB. Free memory was 116.8MB in the beginning and 114.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:17:53,311 INFO L158 Benchmark]: Boogie Preprocessor took 59.88ms. Allocated memory is still 159.4MB. Free memory was 114.7MB in the beginning and 112.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:17:53,317 INFO L158 Benchmark]: RCFGBuilder took 729.10ms. Allocated memory is still 159.4MB. Free memory was 112.9MB in the beginning and 117.9MB in the end (delta: -5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:17:53,317 INFO L158 Benchmark]: TraceAbstraction took 317.69ms. Allocated memory is still 159.4MB. Free memory was 116.9MB in the beginning and 102.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:17:53,318 INFO L158 Benchmark]: Witness Printer took 7.01ms. Allocated memory is still 159.4MB. Free memory was 101.9MB in the beginning and 101.7MB in the end (delta: 171.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:17:53,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.71ms. Allocated memory is still 159.4MB. Free memory was 131.5MB in the beginning and 116.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.41ms. Allocated memory is still 159.4MB. Free memory was 116.8MB in the beginning and 114.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.88ms. Allocated memory is still 159.4MB. Free memory was 114.7MB in the beginning and 112.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 729.10ms. Allocated memory is still 159.4MB. Free memory was 112.9MB in the beginning and 117.9MB in the end (delta: -5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 317.69ms. Allocated memory is still 159.4MB. Free memory was 116.9MB in the beginning and 102.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 7.01ms. Allocated memory is still 159.4MB. Free memory was 101.9MB in the beginning and 101.7MB in the end (delta: 171.7kB). 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L320] COND TRUE __VERIFIER_nondet_int() [L321] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=83occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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 [2022-11-25 18:17:53,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:17:55,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:17:55,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:17:55,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:17:55,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:17:55,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:17:55,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:17:55,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:17:55,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:17:55,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:17:55,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:17:55,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:17:55,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:17:55,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:17:55,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:17:55,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:17:55,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:17:55,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:17:55,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:17:55,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:17:55,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:17:55,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:17:55,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:17:55,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:17:55,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:17:55,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:17:55,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:17:55,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:17:55,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:17:55,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:17:55,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:17:55,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:17:55,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:17:55,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:17:55,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:17:55,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:17:55,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:17:55,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:17:55,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:17:55,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:17:55,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:17:55,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-25 18:17:55,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:17:55,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:17:55,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:17:55,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:17:55,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:17:55,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:17:55,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:17:55,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:17:55,995 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:17:55,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:17:55,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:17:55,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:17:55,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:17:55,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:17:55,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:17:55,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:17:55,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:17:55,998 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:17:55,998 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:17:55,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:17:55,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:17:55,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:17:56,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:17:56,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:17:56,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:17:56,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:17:56,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:17:56,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:17:56,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:17:56,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:17:56,002 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:17:56,003 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:17:56,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:17:56,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:17:56,004 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:17:56,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:17:56,004 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:17:56,005 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98ed95c4a54f5ccebfa7d8542fee1c186675c886b13abb30be9edee4d8cb102c [2022-11-25 18:17:56,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:17:56,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:17:56,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:17:56,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:17:56,506 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:17:56,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-25 18:17:59,576 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:17:59,871 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:17:59,873 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c [2022-11-25 18:17:59,887 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/data/ce9d9ef0d/b20fc449921840fc9a0990a754927290/FLAGcfb6f93c6 [2022-11-25 18:17:59,900 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/data/ce9d9ef0d/b20fc449921840fc9a0990a754927290 [2022-11-25 18:17:59,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:17:59,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:17:59,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:17:59,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:17:59,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:17:59,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:59" (1/1) ... [2022-11-25 18:17:59,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da21d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:59, skipping insertion in model container [2022-11-25 18:17:59,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:59" (1/1) ... [2022-11-25 18:17:59,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:17:59,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:18:00,139 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-25 18:18:00,146 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-25 18:18:00,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:18:00,237 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:18:00,272 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[1995,2008] [2022-11-25 18:18:00,274 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_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/sv-benchmarks/c/combinations/square_8+soft_float_3a.c.cil.c[2364,2377] [2022-11-25 18:18:00,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:18:00,353 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:18:00,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00 WrapperNode [2022-11-25 18:18:00,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:18:00,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:18:00,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:18:00,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:18:00,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,434 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-11-25 18:18:00,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:18:00,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:18:00,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:18:00,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:18:00,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,484 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:18:00,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:18:00,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:18:00,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:18:00,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (1/1) ... [2022-11-25 18:18:00,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:18:00,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:00,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:18:00,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:18:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:18:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:18:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-25 18:18:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-25 18:18:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:18:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:18:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 18:18:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 18:18:00,703 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:18:00,705 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:18:03,369 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:18:03,376 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:18:03,380 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 18:18:03,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:03 BoogieIcfgContainer [2022-11-25 18:18:03,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:18:03,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:18:03,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:18:03,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:18:03,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:17:59" (1/3) ... [2022-11-25 18:18:03,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534b2e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:03, skipping insertion in model container [2022-11-25 18:18:03,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:00" (2/3) ... [2022-11-25 18:18:03,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534b2e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:03, skipping insertion in model container [2022-11-25 18:18:03,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:03" (3/3) ... [2022-11-25 18:18:03,397 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_3a.c.cil.c [2022-11-25 18:18:03,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:18:03,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:18:03,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:18:03,471 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;@6251eb47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:18:03,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:18:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 18:18:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 18:18:03,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:03,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:03,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:03,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-25 18:18:03,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:18:03,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287513831] [2022-11-25 18:18:03,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:03,505 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 [2022-11-25 18:18:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:18:03,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:18:03,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:18:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:04,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:18:04,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:18:04,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:18:04,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:18:04,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287513831] [2022-11-25 18:18:04,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287513831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:18:04,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:18:04,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:18:04,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644156459] [2022-11-25 18:18:04,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:18:04,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:18:04,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:18:04,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:18:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:18:04,139 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:18:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:04,193 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2022-11-25 18:18:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:18:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-25 18:18:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:04,207 INFO L225 Difference]: With dead ends: 115 [2022-11-25 18:18:04,208 INFO L226 Difference]: Without dead ends: 51 [2022-11-25 18:18:04,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:18:04,218 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:04,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:18:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-25 18:18:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-25 18:18:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:18:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2022-11-25 18:18:04,284 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2022-11-25 18:18:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:04,284 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2022-11-25 18:18:04,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:18:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2022-11-25 18:18:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 18:18:04,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:04,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:04,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:18:04,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:18:04,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:04,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-25 18:18:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:18:04,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873308726] [2022-11-25 18:18:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:04,506 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 [2022-11-25 18:18:04,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:18:04,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:18:04,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:19:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:59,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:19:59,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:34,434 WARN L233 SmtUtils]: Spent 10.49s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:21:08,286 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-11-25 18:21:10,335 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-11-25 18:21:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:21:10,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:21:10,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:21:10,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873308726] [2022-11-25 18:21:10,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873308726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:10,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:21:10,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:21:10,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983564625] [2022-11-25 18:21:10,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:10,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:21:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:21:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:21:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=13, Unknown=7, NotChecked=8, Total=42 [2022-11-25 18:21:10,340 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:12,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:21:14,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:21:16,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:21:18,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:21:20,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:21:25,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:21:28,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 18:22:30,569 WARN L233 SmtUtils]: Spent 57.22s on a formula simplification. DAG size of input: 47 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:22:32,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:34,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:37,181 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0)) (.cse2 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) .cse1 (or (and (or (not .cse1) (not .cse2)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse2)) (let ((.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse5 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse6 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse7 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse5 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse6 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse7 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse3))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse5 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse6 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse7 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse3))))) .cse2 (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-11-25 18:22:39,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:41,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:43,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:45,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:47,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:49,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:51,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:53,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:55,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:57,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:22:59,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:01,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:03,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:06,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:08,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:10,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:12,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:14,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:16,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:18,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:20,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:22,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:24,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:26,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:28,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:30,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:32,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:35,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:37,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:39,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:41,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:43,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:45,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:47,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:49,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:51,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:53,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:55,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:57,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:59,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:01,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:03,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:06,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:08,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:10,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:12,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:14,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:16,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:18,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:20,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:22,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:24,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:26,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:28,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:30,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:32,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:35,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:37,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:39,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:41,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:24:41,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:41,256 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2022-11-25 18:24:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:24:41,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 7 [2022-11-25 18:24:41,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:41,258 INFO L225 Difference]: With dead ends: 51 [2022-11-25 18:24:41,258 INFO L226 Difference]: Without dead ends: 46 [2022-11-25 18:24:41,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.9s TimeCoverageRelationStatistics Valid=28, Invalid=26, Unknown=10, NotChecked=26, Total=90 [2022-11-25 18:24:41,260 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 69 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 69 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 143.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 69 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 143.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:41,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 175 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 69 Unknown, 68 Unchecked, 143.0s Time] [2022-11-25 18:24:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-25 18:24:41,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-25 18:24:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:24:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2022-11-25 18:24:41,272 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 7 [2022-11-25 18:24:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:41,272 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2022-11-25 18:24:41,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2022-11-25 18:24:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 18:24:41,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:41,274 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:41,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:41,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:41,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash 220430878, now seen corresponding path program 1 times [2022-11-25 18:24:41,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:41,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364278064] [2022-11-25 18:24:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:41,477 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 [2022-11-25 18:24:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:41,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:24:41,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:41,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:24:41,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:41,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:41,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:41,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364278064] [2022-11-25 18:24:41,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364278064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:41,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:41,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:24:41,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845299712] [2022-11-25 18:24:41,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:41,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:24:41,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:41,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:24:41,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:24:41,760 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:24:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:42,343 INFO L93 Difference]: Finished difference Result 102 states and 148 transitions. [2022-11-25 18:24:42,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:24:42,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-11-25 18:24:42,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:42,350 INFO L225 Difference]: With dead ends: 102 [2022-11-25 18:24:42,351 INFO L226 Difference]: Without dead ends: 60 [2022-11-25 18:24:42,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:42,352 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 16 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:42,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 18:24:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-25 18:24:42,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2022-11-25 18:24:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 18:24:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2022-11-25 18:24:42,377 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 42 [2022-11-25 18:24:42,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:42,378 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2022-11-25 18:24:42,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:24:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2022-11-25 18:24:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 18:24:42,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:42,381 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:42,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:42,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:42,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1744233432, now seen corresponding path program 1 times [2022-11-25 18:24:42,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:42,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338522320] [2022-11-25 18:24:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:42,596 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 [2022-11-25 18:24:42,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:42,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:24:42,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:42,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:24:42,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:42,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:42,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:42,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338522320] [2022-11-25 18:24:42,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338522320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:42,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:42,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:24:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639866949] [2022-11-25 18:24:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:42,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:24:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:24:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:24:42,931 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:24:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:43,525 INFO L93 Difference]: Finished difference Result 106 states and 151 transitions. [2022-11-25 18:24:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:24:43,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2022-11-25 18:24:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:43,528 INFO L225 Difference]: With dead ends: 106 [2022-11-25 18:24:43,528 INFO L226 Difference]: Without dead ends: 63 [2022-11-25 18:24:43,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:43,530 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:43,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 157 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 18:24:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-25 18:24:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-11-25 18:24:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 18:24:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2022-11-25 18:24:43,543 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 45 [2022-11-25 18:24:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:43,544 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2022-11-25 18:24:43,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:24:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2022-11-25 18:24:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 18:24:43,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:43,546 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:43,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:43,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:43,760 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:43,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1089123319, now seen corresponding path program 1 times [2022-11-25 18:24:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:43,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646881405] [2022-11-25 18:24:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:43,761 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 [2022-11-25 18:24:43,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:43,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:24:43,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:43,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:24:43,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:44,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:44,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:44,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646881405] [2022-11-25 18:24:44,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646881405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:44,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:44,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:24:44,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393976388] [2022-11-25 18:24:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:44,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:24:44,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:24:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:24:44,065 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:24:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:44,665 INFO L93 Difference]: Finished difference Result 115 states and 163 transitions. [2022-11-25 18:24:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:24:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-11-25 18:24:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:44,667 INFO L225 Difference]: With dead ends: 115 [2022-11-25 18:24:44,668 INFO L226 Difference]: Without dead ends: 67 [2022-11-25 18:24:44,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:44,669 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:44,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 150 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 18:24:44,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-25 18:24:44,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2022-11-25 18:24:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 18:24:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-11-25 18:24:44,682 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2022-11-25 18:24:44,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:44,682 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-11-25 18:24:44,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:24:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-11-25 18:24:44,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 18:24:44,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:44,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:44,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:44,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:44,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:44,900 INFO L85 PathProgramCache]: Analyzing trace with hash 957340839, now seen corresponding path program 1 times [2022-11-25 18:24:44,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:44,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692905143] [2022-11-25 18:24:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:44,901 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 [2022-11-25 18:24:44,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:44,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:24:44,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:24:44,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:45,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:45,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:45,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692905143] [2022-11-25 18:24:45,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692905143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:45,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:45,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356465511] [2022-11-25 18:24:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:45,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:24:45,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:24:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:45,329 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:24:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:46,366 INFO L93 Difference]: Finished difference Result 123 states and 174 transitions. [2022-11-25 18:24:46,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:24:46,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-11-25 18:24:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:46,369 INFO L225 Difference]: With dead ends: 123 [2022-11-25 18:24:46,369 INFO L226 Difference]: Without dead ends: 74 [2022-11-25 18:24:46,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:24:46,370 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 19 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:46,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 198 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 18:24:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-25 18:24:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2022-11-25 18:24:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 50 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 18:24:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2022-11-25 18:24:46,385 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 47 [2022-11-25 18:24:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:46,385 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2022-11-25 18:24:46,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 18:24:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2022-11-25 18:24:46,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 18:24:46,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:46,388 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:46,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:46,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:46,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:46,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1066513524, now seen corresponding path program 1 times [2022-11-25 18:24:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:46,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183685461] [2022-11-25 18:24:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:46,593 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 [2022-11-25 18:24:46,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:46,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:24:46,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:46,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:24:46,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:47,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:24:48,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183685461] [2022-11-25 18:24:48,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183685461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:48,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:48,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 18:24:48,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593058089] [2022-11-25 18:24:48,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:48,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:24:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:24:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:24:48,092 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:24:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:50,011 INFO L93 Difference]: Finished difference Result 144 states and 206 transitions. [2022-11-25 18:24:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:24:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2022-11-25 18:24:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:50,014 INFO L225 Difference]: With dead ends: 144 [2022-11-25 18:24:50,014 INFO L226 Difference]: Without dead ends: 94 [2022-11-25 18:24:50,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:24:50,016 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:50,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 364 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 18:24:50,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-25 18:24:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2022-11-25 18:24:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 58 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 18:24:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2022-11-25 18:24:50,034 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 48 [2022-11-25 18:24:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:50,034 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2022-11-25 18:24:50,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:24:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2022-11-25 18:24:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 18:24:50,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:50,037 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:50,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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)] Ended with exit code 0 [2022-11-25 18:24:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:50,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash -588856565, now seen corresponding path program 1 times [2022-11-25 18:24:50,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:50,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463857281] [2022-11-25 18:24:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:50,253 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 [2022-11-25 18:24:50,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:50,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:24:50,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (9)] Waiting until timeout for monitored process [2022-11-25 18:24:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:50,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:24:50,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:50,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:24:52,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:52,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463857281] [2022-11-25 18:24:52,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463857281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:52,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:52,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-25 18:24:52,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889434569] [2022-11-25 18:24:52,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:52,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:24:52,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:52,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:24:52,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:24:52,054 INFO L87 Difference]: Start difference. First operand 66 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:24:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:54,136 INFO L93 Difference]: Finished difference Result 162 states and 234 transitions. [2022-11-25 18:24:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:24:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2022-11-25 18:24:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:54,140 INFO L225 Difference]: With dead ends: 162 [2022-11-25 18:24:54,140 INFO L226 Difference]: Without dead ends: 104 [2022-11-25 18:24:54,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:24:54,142 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 90 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:54,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 244 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 18:24:54,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-25 18:24:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2022-11-25 18:24:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 18:24:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 101 transitions. [2022-11-25 18:24:54,161 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 101 transitions. Word has length 50 [2022-11-25 18:24:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:54,162 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 101 transitions. [2022-11-25 18:24:54,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:24:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 101 transitions. [2022-11-25 18:24:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 18:24:54,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:54,165 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:54,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (9)] Ended with exit code 0 [2022-11-25 18:24:54,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:54,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1889085224, now seen corresponding path program 2 times [2022-11-25 18:24:54,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:54,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099142764] [2022-11-25 18:24:54,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:24:54,381 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 [2022-11-25 18:24:54,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:54,383 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:24:54,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (10)] Waiting until timeout for monitored process [2022-11-25 18:24:54,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:24:54,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:54,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:24:54,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-25 18:24:54,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:54,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:54,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099142764] [2022-11-25 18:24:54,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099142764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:54,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:54,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:24:54,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943187330] [2022-11-25 18:24:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:54,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:54,874 INFO L87 Difference]: Start difference. First operand 70 states and 101 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 18:24:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:55,334 INFO L93 Difference]: Finished difference Result 110 states and 159 transitions. [2022-11-25 18:24:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:55,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2022-11-25 18:24:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:55,337 INFO L225 Difference]: With dead ends: 110 [2022-11-25 18:24:55,337 INFO L226 Difference]: Without dead ends: 89 [2022-11-25 18:24:55,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:24:55,338 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 17 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:55,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 293 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:24:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-25 18:24:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2022-11-25 18:24:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 70 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 18:24:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2022-11-25 18:24:55,356 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 57 [2022-11-25 18:24:55,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:55,357 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2022-11-25 18:24:55,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 18:24:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2022-11-25 18:24:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 18:24:55,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:55,359 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:55,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:55,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:24:55,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1704817494, now seen corresponding path program 1 times [2022-11-25 18:24:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891480953] [2022-11-25 18:24:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:55,578 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 [2022-11-25 18:24:55,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:55,579 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:24:55,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (11)] Waiting until timeout for monitored process [2022-11-25 18:24:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:55,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:24:55,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:56,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:24:58,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:58,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891480953] [2022-11-25 18:24:58,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891480953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:58,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:58,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-25 18:24:58,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085310466] [2022-11-25 18:24:58,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:58,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 18:24:58,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 18:24:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-25 18:24:58,777 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:25:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:04,148 INFO L93 Difference]: Finished difference Result 221 states and 318 transitions. [2022-11-25 18:25:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 18:25:04,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2022-11-25 18:25:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:04,151 INFO L225 Difference]: With dead ends: 221 [2022-11-25 18:25:04,151 INFO L226 Difference]: Without dead ends: 150 [2022-11-25 18:25:04,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2022-11-25 18:25:04,155 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 165 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:04,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 545 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-25 18:25:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-25 18:25:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 93. [2022-11-25 18:25:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 84 states have internal predecessors, (118), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 18:25:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2022-11-25 18:25:04,182 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 57 [2022-11-25 18:25:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:04,183 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2022-11-25 18:25:04,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:25:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2022-11-25 18:25:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 18:25:04,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:04,185 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:04,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:04,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:25:04,396 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:04,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash -848364147, now seen corresponding path program 1 times [2022-11-25 18:25:04,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:25:04,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555193806] [2022-11-25 18:25:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:04,398 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 [2022-11-25 18:25:04,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:25:04,399 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:25:04,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (12)] Waiting until timeout for monitored process [2022-11-25 18:25:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:04,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:25:04,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 24 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:25:05,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:25:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:25:08,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:25:08,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555193806] [2022-11-25 18:25:08,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555193806] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:25:08,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:25:08,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-25 18:25:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119568744] [2022-11-25 18:25:08,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:25:08,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 18:25:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:25:08,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 18:25:08,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-25 18:25:08,102 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:25:15,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:15,627 INFO L93 Difference]: Finished difference Result 244 states and 356 transitions. [2022-11-25 18:25:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 18:25:15,629 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-11-25 18:25:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:15,631 INFO L225 Difference]: With dead ends: 244 [2022-11-25 18:25:15,631 INFO L226 Difference]: Without dead ends: 159 [2022-11-25 18:25:15,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2022-11-25 18:25:15,633 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 251 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:15,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 786 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:25:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-25 18:25:15,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 103. [2022-11-25 18:25:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 94 states have internal predecessors, (135), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 18:25:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 153 transitions. [2022-11-25 18:25:15,659 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 153 transitions. Word has length 62 [2022-11-25 18:25:15,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:15,660 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 153 transitions. [2022-11-25 18:25:15,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:25:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 153 transitions. [2022-11-25 18:25:15,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 18:25:15,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:15,662 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:15,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (12)] Ended with exit code 0 [2022-11-25 18:25:15,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:25:15,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash -115561174, now seen corresponding path program 2 times [2022-11-25 18:25:15,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:25:15,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450521253] [2022-11-25 18:25:15,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:25:15,876 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 [2022-11-25 18:25:15,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:25:15,877 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:25:15,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (13)] Waiting until timeout for monitored process [2022-11-25 18:25:15,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:25:15,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:25:15,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:25:15,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-11-25 18:25:15,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:25:15,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:25:15,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450521253] [2022-11-25 18:25:15,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450521253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:15,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:25:15,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:25:15,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67086653] [2022-11-25 18:25:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:15,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:25:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:25:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:25:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:25:15,990 INFO L87 Difference]: Start difference. First operand 103 states and 153 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 18:25:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:16,033 INFO L93 Difference]: Finished difference Result 112 states and 163 transitions. [2022-11-25 18:25:16,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:25:16,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-11-25 18:25:16,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:16,035 INFO L225 Difference]: With dead ends: 112 [2022-11-25 18:25:16,035 INFO L226 Difference]: Without dead ends: 103 [2022-11-25 18:25:16,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:25:16,036 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:16,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:25:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-25 18:25:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-25 18:25:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 92 states have (on average 1.4565217391304348) internal successors, (134), 94 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 18:25:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 152 transitions. [2022-11-25 18:25:16,072 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 152 transitions. Word has length 75 [2022-11-25 18:25:16,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:16,075 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 152 transitions. [2022-11-25 18:25:16,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 18:25:16,076 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 152 transitions. [2022-11-25 18:25:16,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 18:25:16,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:16,077 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:16,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:16,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:25:16,290 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:16,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1364778096, now seen corresponding path program 1 times [2022-11-25 18:25:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:25:16,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242526445] [2022-11-25 18:25:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:16,292 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 [2022-11-25 18:25:16,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:25:16,293 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:25:16,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (14)] Waiting until timeout for monitored process [2022-11-25 18:25:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:16,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:25:16,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:25:18,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:25:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 163 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:25:24,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:25:24,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242526445] [2022-11-25 18:25:24,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242526445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:25:24,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:25:24,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-25 18:25:24,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387785978] [2022-11-25 18:25:24,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:25:24,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 18:25:24,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:25:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 18:25:24,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-25 18:25:24,307 INFO L87 Difference]: Start difference. First operand 103 states and 152 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:25:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:43,204 INFO L93 Difference]: Finished difference Result 347 states and 504 transitions. [2022-11-25 18:25:43,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-25 18:25:43,206 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-11-25 18:25:43,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:43,208 INFO L225 Difference]: With dead ends: 347 [2022-11-25 18:25:43,208 INFO L226 Difference]: Without dead ends: 252 [2022-11-25 18:25:43,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=729, Invalid=1433, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 18:25:43,210 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 460 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:43,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1539 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-25 18:25:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-25 18:25:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 129. [2022-11-25 18:25:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 118 states have (on average 1.5) internal successors, (177), 120 states have internal predecessors, (177), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 18:25:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 195 transitions. [2022-11-25 18:25:43,244 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 195 transitions. Word has length 77 [2022-11-25 18:25:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:43,245 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 195 transitions. [2022-11-25 18:25:43,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 26 states have internal predecessors, (101), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:25:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 195 transitions. [2022-11-25 18:25:43,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 18:25:43,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:43,247 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:43,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:25:43,461 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash 875383315, now seen corresponding path program 1 times [2022-11-25 18:25:43,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:25:43,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996866919] [2022-11-25 18:25:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:43,462 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 [2022-11-25 18:25:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:25:43,464 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:25:43,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (15)] Waiting until timeout for monitored process [2022-11-25 18:25:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:43,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 18:25:43,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 273 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:25:46,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:25:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 4 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:25:53,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:25:53,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996866919] [2022-11-25 18:25:53,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996866919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:25:53,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:25:53,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-25 18:25:53,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279074090] [2022-11-25 18:25:53,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:25:53,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-25 18:25:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:25:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-25 18:25:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 18:25:53,448 INFO L87 Difference]: Start difference. First operand 129 states and 195 transitions. Second operand has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:26:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:26:10,927 INFO L93 Difference]: Finished difference Result 348 states and 510 transitions. [2022-11-25 18:26:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-25 18:26:10,928 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2022-11-25 18:26:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:26:10,930 INFO L225 Difference]: With dead ends: 348 [2022-11-25 18:26:10,930 INFO L226 Difference]: Without dead ends: 227 [2022-11-25 18:26:10,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=991, Invalid=2315, Unknown=0, NotChecked=0, Total=3306 [2022-11-25 18:26:10,932 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 660 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:26:10,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 1626 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-25 18:26:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-25 18:26:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 133. [2022-11-25 18:26:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 122 states have (on average 1.5081967213114753) internal successors, (184), 124 states have internal predecessors, (184), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 18:26:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2022-11-25 18:26:10,962 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 88 [2022-11-25 18:26:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:26:10,962 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2022-11-25 18:26:10,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.6176470588235294) internal successors, (123), 34 states have internal predecessors, (123), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:26:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2022-11-25 18:26:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 18:26:10,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:26:10,964 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:26:10,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:26:11,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:26:11,177 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:26:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:26:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1663337104, now seen corresponding path program 2 times [2022-11-25 18:26:11,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:26:11,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070078685] [2022-11-25 18:26:11,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:26:11,178 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 [2022-11-25 18:26:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:26:11,179 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:26:11,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (16)] Waiting until timeout for monitored process [2022-11-25 18:26:11,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:26:11,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:26:11,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:26:11,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:26:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-25 18:26:11,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:26:11,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:26:11,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070078685] [2022-11-25 18:26:11,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070078685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:26:11,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:26:11,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:26:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498850726] [2022-11-25 18:26:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:26:11,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:26:11,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:26:11,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:26:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:26:11,426 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 18:26:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:26:11,831 INFO L93 Difference]: Finished difference Result 170 states and 252 transitions. [2022-11-25 18:26:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:26:11,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 113 [2022-11-25 18:26:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:26:11,833 INFO L225 Difference]: With dead ends: 170 [2022-11-25 18:26:11,834 INFO L226 Difference]: Without dead ends: 160 [2022-11-25 18:26:11,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:26:11,835 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 44 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:26:11,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 202 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:26:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-25 18:26:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 138. [2022-11-25 18:26:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 127 states have (on average 1.4960629921259843) internal successors, (190), 129 states have internal predecessors, (190), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 18:26:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 208 transitions. [2022-11-25 18:26:11,862 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 208 transitions. Word has length 113 [2022-11-25 18:26:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:26:11,862 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 208 transitions. [2022-11-25 18:26:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 18:26:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 208 transitions. [2022-11-25 18:26:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 18:26:11,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:26:11,864 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:26:11,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (16)] Forceful destruction successful, exit code 0 [2022-11-25 18:26:12,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:26:12,076 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:26:12,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:26:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1822283566, now seen corresponding path program 1 times [2022-11-25 18:26:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:26:12,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198807784] [2022-11-25 18:26:12,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:26:12,078 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 [2022-11-25 18:26:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:26:12,079 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:26:12,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (17)] Waiting until timeout for monitored process [2022-11-25 18:26:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:12,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 18:26:12,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:26:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 24 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:26:19,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:26:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 4 proven. 745 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 18:26:35,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:26:35,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198807784] [2022-11-25 18:26:35,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198807784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:26:35,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:26:35,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-25 18:26:35,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389405563] [2022-11-25 18:26:35,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:26:35,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-25 18:26:35,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:26:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-25 18:26:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-11-25 18:26:35,550 INFO L87 Difference]: Start difference. First operand 138 states and 208 transitions. Second operand has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:27:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:27:47,367 INFO L93 Difference]: Finished difference Result 591 states and 868 transitions. [2022-11-25 18:27:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-25 18:27:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2022-11-25 18:27:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:27:47,371 INFO L225 Difference]: With dead ends: 591 [2022-11-25 18:27:47,371 INFO L226 Difference]: Without dead ends: 461 [2022-11-25 18:27:47,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 50.8s TimeCoverageRelationStatistics Valid=2901, Invalid=6029, Unknown=0, NotChecked=0, Total=8930 [2022-11-25 18:27:47,375 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1740 mSDsluCounter, 5004 mSDsCounter, 0 mSdLazyCounter, 4391 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 4439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:27:47,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 5213 Invalid, 4439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 4391 Invalid, 0 Unknown, 0 Unchecked, 39.0s Time] [2022-11-25 18:27:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-25 18:27:47,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 206. [2022-11-25 18:27:47,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 195 states have (on average 1.5538461538461539) internal successors, (303), 197 states have internal predecessors, (303), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 18:27:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 321 transitions. [2022-11-25 18:27:47,427 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 321 transitions. Word has length 113 [2022-11-25 18:27:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:27:47,427 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 321 transitions. [2022-11-25 18:27:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.46) internal successors, (173), 50 states have internal predecessors, (173), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 18:27:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 321 transitions. [2022-11-25 18:27:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 18:27:47,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:27:47,430 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:47,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:47,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:27:47,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:27:47,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash 239945809, now seen corresponding path program 1 times [2022-11-25 18:27:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:27:47,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230295322] [2022-11-25 18:27:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:47,648 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 [2022-11-25 18:27:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:27:47,649 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 18:27:47,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a3c0fa1-649b-41ae-9dd3-e350f8a55869/bin/uautomizer-ZsLfNo2U6R/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 (18)] Waiting until timeout for monitored process [2022-11-25 18:27:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:47,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-25 18:27:47,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:28:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 10 proven. 836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 18:28:02,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:28:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 10 proven. 836 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 18:28:32,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:28:32,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230295322] [2022-11-25 18:28:32,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230295322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:28:32,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:28:32,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 66 [2022-11-25 18:28:32,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961215904] [2022-11-25 18:28:32,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:28:32,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-25 18:28:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:28:32,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-25 18:28:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=3524, Unknown=0, NotChecked=0, Total=4290 [2022-11-25 18:28:32,120 INFO L87 Difference]: Start difference. First operand 206 states and 321 transitions. Second operand has 66 states, 66 states have (on average 2.878787878787879) internal successors, (190), 62 states have internal predecessors, (190), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7)