./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bd8a86fa4f066b15db9b2bf3d5b05fdfa163a1ceac95f1ac0dba938965cde89d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:00:09,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:00:09,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:00:09,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:00:09,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:00:09,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:00:09,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:00:09,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:00:09,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:00:09,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:00:09,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:00:09,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:00:09,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:00:09,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:00:09,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:00:09,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:00:09,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:00:09,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:00:09,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:00:09,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:00:09,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:00:09,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:00:09,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:00:09,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:00:09,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:00:09,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:00:09,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:00:09,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:00:09,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:00:09,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:00:09,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:00:09,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:00:09,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:00:09,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:00:09,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:00:09,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:00:09,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:00:09,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:00:09,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:00:09,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:00:09,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:00:09,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 17:00:09,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:00:09,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:00:09,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:00:09,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:00:09,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:00:09,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:00:09,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:00:09,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:00:09,830 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:00:09,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:00:09,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:00:09,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:00:09,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:00:09,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:00:09,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:00:09,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:00:09,833 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:00:09,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:00:09,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:00:09,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:00:09,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:00:09,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:00:09,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:00:09,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:00:09,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:00:09,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:00:09,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:00:09,836 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:00:09,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:00:09,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:00:09,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd8a86fa4f066b15db9b2bf3d5b05fdfa163a1ceac95f1ac0dba938965cde89d [2022-11-21 17:00:10,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:00:10,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:00:10,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:00:10,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:00:10,161 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:00:10,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2022-11-21 17:00:13,331 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:00:13,658 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:00:13,662 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2022-11-21 17:00:13,675 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/data/da92689eb/c789330a7ec848ae977f31f83a284546/FLAG26ec564b0 [2022-11-21 17:00:13,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/data/da92689eb/c789330a7ec848ae977f31f83a284546 [2022-11-21 17:00:13,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:00:13,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:00:13,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:00:13,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:00:13,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:00:13,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:00:13" (1/1) ... [2022-11-21 17:00:13,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6d91ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:13, skipping insertion in model container [2022-11-21 17:00:13,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:00:13" (1/1) ... [2022-11-21 17:00:13,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:00:13,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:00:13,902 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_0e673cdf-11dc-4bfe-ba46-be0e39c39505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1107,1120] [2022-11-21 17:00:13,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:00:13,981 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:00:13,993 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_0e673cdf-11dc-4bfe-ba46-be0e39c39505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1107,1120] [2022-11-21 17:00:14,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:00:14,052 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:00:14,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14 WrapperNode [2022-11-21 17:00:14,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:00:14,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:00:14,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:00:14,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:00:14,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,119 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 111 [2022-11-21 17:00:14,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:00:14,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:00:14,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:00:14,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:00:14,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:00:14,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:00:14,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:00:14,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:00:14,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (1/1) ... [2022-11-21 17:00:14,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:00:14,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:14,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:00:14,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:00:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:00:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:00:14,367 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:00:14,369 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:00:14,630 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:00:14,636 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:00:14,637 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:00:14,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:14 BoogieIcfgContainer [2022-11-21 17:00:14,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:00:14,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:00:14,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:00:14,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:00:14,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:00:13" (1/3) ... [2022-11-21 17:00:14,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50af51c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:00:14, skipping insertion in model container [2022-11-21 17:00:14,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:14" (2/3) ... [2022-11-21 17:00:14,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50af51c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:00:14, skipping insertion in model container [2022-11-21 17:00:14,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:14" (3/3) ... [2022-11-21 17:00:14,649 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs.c [2022-11-21 17:00:14,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:00:14,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:00:14,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:00:14,792 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;@3da408cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:00:14,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:00:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:00:14,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:14,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:00:14,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-21 17:00:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:00:14,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483419339] [2022-11-21 17:00:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:00:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:00:15,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:00:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:00:15,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:00:15,185 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:00:15,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 17:00:15,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:00:15,194 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 17:00:15,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:00:15,215 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-21 17:00:15,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:00:15 BoogieIcfgContainer [2022-11-21 17:00:15,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:00:15,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:00:15,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:00:15,224 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:00:15,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:14" (3/4) ... [2022-11-21 17:00:15,230 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 17:00:15,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:00:15,231 INFO L158 Benchmark]: Toolchain (without parser) took 1528.15ms. Allocated memory is still 142.6MB. Free memory was 111.9MB in the beginning and 60.6MB in the end (delta: 51.3MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-21 17:00:15,232 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:00:15,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.33ms. Allocated memory is still 142.6MB. Free memory was 111.9MB in the beginning and 100.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-21 17:00:15,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.70ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 98.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:00:15,234 INFO L158 Benchmark]: Boogie Preprocessor took 39.25ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 97.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:00:15,235 INFO L158 Benchmark]: RCFGBuilder took 478.92ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 79.4MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-21 17:00:15,235 INFO L158 Benchmark]: TraceAbstraction took 580.97ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 61.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-21 17:00:15,236 INFO L158 Benchmark]: Witness Printer took 7.16ms. Allocated memory is still 142.6MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:00:15,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.33ms. Allocated memory is still 142.6MB. Free memory was 111.9MB in the beginning and 100.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.70ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 98.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.25ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 97.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 478.92ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 79.4MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 580.97ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 61.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.16ms. Allocated memory is still 142.6MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 73, overapproximation of bitwiseAnd at line 67. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 5); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (5 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 4); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (4 - 1); [L34] const SORT_4 var_5 = 1; [L35] const SORT_8 var_9 = 2; [L36] const SORT_1 var_15 = 1; [L37] const SORT_4 var_19 = 5; [L38] const SORT_4 var_22 = 7; [L39] const SORT_4 var_26 = 11; [L40] const SORT_4 var_29 = 3; [L41] const SORT_8 var_30 = 1; [L42] const SORT_8 var_37 = 5; [L44] SORT_1 input_2; [L45] SORT_1 input_3; [L47] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L48] SORT_4 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L49] SORT_4 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L50] SORT_4 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L52] SORT_4 init_7_arg_1 = var_5; [L53] state_6 = init_7_arg_1 [L54] SORT_4 init_21_arg_1 = var_19; [L55] state_20 = init_21_arg_1 [L56] SORT_4 init_24_arg_1 = var_22; [L57] state_23 = init_24_arg_1 [L58] SORT_4 init_28_arg_1 = var_26; [L59] state_27 = init_28_arg_1 VAL [init_21_arg_1=5, init_24_arg_1=7, init_28_arg_1=11, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=5, state_23=7, state_27=11, state_6=1, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L62] input_2 = __VERIFIER_nondet_uchar() [L63] input_3 = __VERIFIER_nondet_uchar() [L66] SORT_8 var_10_arg_0 = var_9; [L67] var_10_arg_0 = var_10_arg_0 & mask_SORT_8 [L68] SORT_4 var_10 = var_10_arg_0; [L69] SORT_4 var_11_arg_0 = state_6; [L70] SORT_4 var_11_arg_1 = var_10; [L71] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L72] SORT_1 var_12_arg_0 = var_11; [L73] SORT_1 var_12 = ~var_12_arg_0; [L74] SORT_1 var_16_arg_0 = var_12; [L75] SORT_1 var_16 = ~var_16_arg_0; [L76] SORT_1 var_17_arg_0 = var_15; [L77] SORT_1 var_17_arg_1 = var_16; [L78] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L79] var_17 = var_17 & mask_SORT_1 [L80] SORT_1 bad_18_arg_0 = var_17; [L81] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-21 17:00:15,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/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_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bd8a86fa4f066b15db9b2bf3d5b05fdfa163a1ceac95f1ac0dba938965cde89d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:00:17,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:00:17,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:00:17,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:00:17,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:00:17,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:00:17,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:00:17,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:00:17,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:00:17,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:00:17,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:00:17,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:00:17,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:00:17,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:00:17,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:00:17,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:00:17,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:00:17,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:00:17,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:00:17,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:00:17,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:00:17,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:00:17,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:00:17,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:00:17,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:00:17,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:00:17,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:00:17,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:00:17,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:00:17,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:00:17,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:00:17,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:00:17,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:00:17,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:00:17,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:00:17,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:00:17,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:00:17,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:00:17,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:00:17,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:00:17,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:00:17,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-21 17:00:18,023 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:00:18,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:00:18,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:00:18,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:00:18,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:00:18,027 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:00:18,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:00:18,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:00:18,028 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:00:18,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:00:18,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:00:18,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:00:18,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:00:18,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:00:18,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:00:18,031 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 17:00:18,031 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 17:00:18,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:00:18,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:00:18,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:00:18,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:00:18,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:00:18,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:00:18,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:00:18,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:00:18,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:00:18,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:00:18,034 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 17:00:18,034 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 17:00:18,035 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:00:18,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:00:18,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:00:18,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 17:00:18,036 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd8a86fa4f066b15db9b2bf3d5b05fdfa163a1ceac95f1ac0dba938965cde89d [2022-11-21 17:00:18,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:00:18,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:00:18,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:00:18,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:00:18,577 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:00:18,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2022-11-21 17:00:21,807 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:00:22,149 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:00:22,150 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2022-11-21 17:00:22,161 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/data/b82cb0bae/4be2b957e88540449717a321e998535a/FLAG7fef64522 [2022-11-21 17:00:22,189 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/data/b82cb0bae/4be2b957e88540449717a321e998535a [2022-11-21 17:00:22,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:00:22,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:00:22,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:00:22,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:00:22,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:00:22,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b48265a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22, skipping insertion in model container [2022-11-21 17:00:22,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:00:22,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:00:22,393 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_0e673cdf-11dc-4bfe-ba46-be0e39c39505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1107,1120] [2022-11-21 17:00:22,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:00:22,495 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:00:22,507 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_0e673cdf-11dc-4bfe-ba46-be0e39c39505/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1107,1120] [2022-11-21 17:00:22,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:00:22,547 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:00:22,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22 WrapperNode [2022-11-21 17:00:22,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:00:22,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:00:22,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:00:22,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:00:22,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,618 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 111 [2022-11-21 17:00:22,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:00:22,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:00:22,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:00:22,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:00:22,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,667 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:00:22,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:00:22,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:00:22,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:00:22,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (1/1) ... [2022-11-21 17:00:22,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:00:22,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:00:22,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:00:22,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:00:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:00:22,930 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:00:22,932 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:00:23,213 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:00:23,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:00:23,227 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:00:23,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:23 BoogieIcfgContainer [2022-11-21 17:00:23,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:00:23,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:00:23,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:00:23,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:00:23,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:00:22" (1/3) ... [2022-11-21 17:00:23,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b9bfea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:00:23, skipping insertion in model container [2022-11-21 17:00:23,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:00:22" (2/3) ... [2022-11-21 17:00:23,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b9bfea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:00:23, skipping insertion in model container [2022-11-21 17:00:23,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:00:23" (3/3) ... [2022-11-21 17:00:23,241 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs.c [2022-11-21 17:00:23,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:00:23,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:00:23,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:00:23,399 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;@11901c21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:00:23,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:00:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:00:23,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:23,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:00:23,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:23,429 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-21 17:00:23,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:00:23,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535897363] [2022-11-21 17:00:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:23,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:00:23,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:00:23,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 17:00:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:23,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 17:00:23,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:23,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:00:23,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:00:23,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535897363] [2022-11-21 17:00:23,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535897363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:00:23,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:00:23,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:00:23,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445956597] [2022-11-21 17:00:23,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:00:23,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:00:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:00:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:00:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:00:23,874 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:23,968 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-21 17:00:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:00:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 17:00:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:23,979 INFO L225 Difference]: With dead ends: 20 [2022-11-21 17:00:23,980 INFO L226 Difference]: Without dead ends: 11 [2022-11-21 17:00:23,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:00:23,987 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:23,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:00:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-21 17:00:24,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-21 17:00:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-21 17:00:24,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-21 17:00:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:24,023 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-21 17:00:24,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-21 17:00:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:00:24,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:24,024 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-21 17:00:24,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:24,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:24,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:24,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-21 17:00:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:00:24,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349140603] [2022-11-21 17:00:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:00:24,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:24,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:00:24,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:00:24,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 17:00:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:24,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-21 17:00:24,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:24,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:25,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:00:25,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349140603] [2022-11-21 17:00:25,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349140603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:25,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:00:25,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 17:00:25,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544629341] [2022-11-21 17:00:25,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:25,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:00:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:00:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:00:25,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:00:25,432 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:25,671 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-21 17:00:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:00:25,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-21 17:00:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:25,673 INFO L225 Difference]: With dead ends: 16 [2022-11-21 17:00:25,673 INFO L226 Difference]: Without dead ends: 14 [2022-11-21 17:00:25,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:00:25,675 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:25,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 21 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:00:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-21 17:00:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-21 17:00:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-21 17:00:25,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-21 17:00:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:25,685 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-21 17:00:25,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-21 17:00:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 17:00:25,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:25,688 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-21 17:00:25,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:25,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:25,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:25,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-21 17:00:25,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:00:25,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985266455] [2022-11-21 17:00:25,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:00:25,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:25,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:00:25,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:00:25,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 17:00:26,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:00:26,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:00:26,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-21 17:00:26,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:26,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:27,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:00:27,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985266455] [2022-11-21 17:00:27,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985266455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:27,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:00:27,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-21 17:00:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954725890] [2022-11-21 17:00:27,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:27,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:00:27,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:00:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:00:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:00:27,822 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:28,422 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-21 17:00:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:00:28,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 17:00:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:28,424 INFO L225 Difference]: With dead ends: 19 [2022-11-21 17:00:28,424 INFO L226 Difference]: Without dead ends: 17 [2022-11-21 17:00:28,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:00:28,425 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:28,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 21 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:00:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-21 17:00:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-21 17:00:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-21 17:00:28,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-21 17:00:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:28,438 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-21 17:00:28,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-21 17:00:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 17:00:28,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:28,439 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-21 17:00:28,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:28,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:28,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:28,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:28,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-21 17:00:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:00:28,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101718876] [2022-11-21 17:00:28,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:00:28,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:28,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:00:28,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:00:28,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 17:00:28,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 17:00:28,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:00:28,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 17:00:28,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:29,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:30,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:00:30,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101718876] [2022-11-21 17:00:30,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101718876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:30,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:00:30,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-21 17:00:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18416351] [2022-11-21 17:00:30,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:30,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:00:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:00:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:00:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:00:30,502 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:30,931 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-21 17:00:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:00:30,935 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 17:00:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:30,936 INFO L225 Difference]: With dead ends: 22 [2022-11-21 17:00:30,936 INFO L226 Difference]: Without dead ends: 20 [2022-11-21 17:00:30,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:00:30,937 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:30,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 30 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:00:30,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-21 17:00:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-21 17:00:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-21 17:00:30,946 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-21 17:00:30,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:30,947 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-21 17:00:30,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:30,948 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-21 17:00:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 17:00:30,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:30,949 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-21 17:00:30,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:31,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:31,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-21 17:00:31,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:00:31,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894836643] [2022-11-21 17:00:31,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:00:31,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:31,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:00:31,166 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:00:31,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 17:00:31,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:00:31,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:00:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-21 17:00:31,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:00:31,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:32,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:00:32,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894836643] [2022-11-21 17:00:32,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894836643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:32,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:00:32,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-11-21 17:00:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801699412] [2022-11-21 17:00:32,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:32,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 17:00:32,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:00:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 17:00:32,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:00:32,800 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:33,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:33,255 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-11-21 17:00:33,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:00:33,256 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-21 17:00:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:33,256 INFO L225 Difference]: With dead ends: 28 [2022-11-21 17:00:33,257 INFO L226 Difference]: Without dead ends: 26 [2022-11-21 17:00:33,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:00:33,258 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:33,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 50 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:00:33,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-21 17:00:33,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-21 17:00:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-21 17:00:33,268 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2022-11-21 17:00:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:33,268 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-21 17:00:33,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-21 17:00:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 17:00:33,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:33,269 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-11-21 17:00:33,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:33,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-11-21 17:00:33,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:00:33,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022555656] [2022-11-21 17:00:33,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:00:33,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:33,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:00:33,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:00:33,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-21 17:00:33,659 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-21 17:00:33,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:00:33,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 156 conjunts are in the unsatisfiable core [2022-11-21 17:00:33,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:35,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:42,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:00:42,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022555656] [2022-11-21 17:00:42,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022555656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:42,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:00:42,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-21 17:00:42,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205684588] [2022-11-21 17:00:42,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:42,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:00:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:00:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:00:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:00:42,997 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:43,954 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-11-21 17:00:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:00:43,955 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 17:00:43,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:43,956 INFO L225 Difference]: With dead ends: 34 [2022-11-21 17:00:43,956 INFO L226 Difference]: Without dead ends: 32 [2022-11-21 17:00:43,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:00:43,957 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:43,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 46 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:00:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-21 17:00:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-11-21 17:00:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-11-21 17:00:43,968 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2022-11-21 17:00:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:43,968 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-11-21 17:00:43,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-11-21 17:00:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 17:00:43,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:43,969 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-11-21 17:00:43,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:00:44,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:44,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 6 times [2022-11-21 17:00:44,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:00:44,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149778538] [2022-11-21 17:00:44,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:00:44,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:44,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:00:44,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:00:44,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-21 17:00:44,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-21 17:00:44,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:00:44,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-21 17:00:44,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:45,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:00:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:46,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:00:46,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149778538] [2022-11-21 17:00:46,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149778538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:00:46,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:00:46,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-21 17:00:46,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599346184] [2022-11-21 17:00:46,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:00:46,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:00:46,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:00:46,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:00:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:00:46,745 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:00:50,232 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2022-11-21 17:00:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:00:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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 23 [2022-11-21 17:00:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:00:50,234 INFO L225 Difference]: With dead ends: 55 [2022-11-21 17:00:50,234 INFO L226 Difference]: Without dead ends: 53 [2022-11-21 17:00:50,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:00:50,235 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 55 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:00:50,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 36 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:00:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-21 17:00:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-11-21 17:00:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-11-21 17:00:50,253 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 23 [2022-11-21 17:00:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:00:50,254 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-11-21 17:00:50,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:00:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-11-21 17:00:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-21 17:00:50,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:00:50,255 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1] [2022-11-21 17:00:50,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-21 17:00:50,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:50,462 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:00:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:00:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash 969805001, now seen corresponding path program 7 times [2022-11-21 17:00:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:00:50,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260842854] [2022-11-21 17:00:50,464 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:00:50,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:00:50,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:00:50,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:00:50,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-21 17:00:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:00:50,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 419 conjunts are in the unsatisfiable core [2022-11-21 17:00:50,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:00:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:00:56,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:01:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:35,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:01:35,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260842854] [2022-11-21 17:01:35,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260842854] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:01:35,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:01:35,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-21 17:01:35,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635982574] [2022-11-21 17:01:35,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:01:35,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 17:01:35,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:01:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 17:01:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:01:35,336 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:01:40,591 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2022-11-21 17:01:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 17:01:40,591 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 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 47 [2022-11-21 17:01:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:01:40,592 INFO L225 Difference]: With dead ends: 61 [2022-11-21 17:01:40,592 INFO L226 Difference]: Without dead ends: 59 [2022-11-21 17:01:40,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=219, Invalid=2331, Unknown=0, NotChecked=0, Total=2550 [2022-11-21 17:01:40,595 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 58 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:01:40,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 105 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 17:01:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-21 17:01:40,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2022-11-21 17:01:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-11-21 17:01:40,616 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 47 [2022-11-21 17:01:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:01:40,617 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-11-21 17:01:40,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 34 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-11-21 17:01:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-21 17:01:40,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:01:40,619 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2022-11-21 17:01:40,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:01:40,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:01:40,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:01:40,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:40,824 INFO L85 PathProgramCache]: Analyzing trace with hash -779438813, now seen corresponding path program 8 times [2022-11-21 17:01:40,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:01:40,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646109157] [2022-11-21 17:01:40,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:01:40,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:01:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:01:40,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:01:40,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-21 17:01:41,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:01:41,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:01:41,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 303 conjunts are in the unsatisfiable core [2022-11-21 17:01:41,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:01:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:45,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:08,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:02:08,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646109157] [2022-11-21 17:02:08,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646109157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:08,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:02:08,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-21 17:02:08,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658942729] [2022-11-21 17:02:08,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:08,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 17:02:08,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:02:08,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 17:02:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1151, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 17:02:08,324 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 36 states, 36 states have (on average 2.7222222222222223) internal successors, (98), 36 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:13,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:13,221 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2022-11-21 17:02:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 17:02:13,222 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.7222222222222223) internal successors, (98), 36 states have internal predecessors, (98), 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 50 [2022-11-21 17:02:13,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:13,222 INFO L225 Difference]: With dead ends: 64 [2022-11-21 17:02:13,223 INFO L226 Difference]: Without dead ends: 62 [2022-11-21 17:02:13,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=258, Invalid=2604, Unknown=0, NotChecked=0, Total=2862 [2022-11-21 17:02:13,225 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 78 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:13,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 75 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:02:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-21 17:02:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-11-21 17:02:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2022-11-21 17:02:13,247 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 50 [2022-11-21 17:02:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:13,247 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2022-11-21 17:02:13,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.7222222222222223) internal successors, (98), 36 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2022-11-21 17:02:13,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 17:02:13,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:13,249 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 1, 1, 1, 1] [2022-11-21 17:02:13,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:13,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:02:13,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:13,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:13,459 INFO L85 PathProgramCache]: Analyzing trace with hash 660960099, now seen corresponding path program 9 times [2022-11-21 17:02:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:02:13,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246890000] [2022-11-21 17:02:13,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:02:13,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:02:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:02:13,462 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:02:13,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-21 17:02:13,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-11-21 17:02:13,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:02:13,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 147 conjunts are in the unsatisfiable core [2022-11-21 17:02:13,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:16,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:02:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:23,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:02:23,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246890000] [2022-11-21 17:02:23,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246890000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:02:23,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:02:23,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2022-11-21 17:02:23,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972342963] [2022-11-21 17:02:23,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:02:23,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-21 17:02:23,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:02:23,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-21 17:02:23,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2022-11-21 17:02:23,995 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 40 states, 40 states have (on average 2.75) internal successors, (110), 40 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:34,173 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 391 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:02:57,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:57,171 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2022-11-21 17:02:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-21 17:02:57,172 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.75) internal successors, (110), 40 states have internal predecessors, (110), 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 56 [2022-11-21 17:02:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:57,173 INFO L225 Difference]: With dead ends: 121 [2022-11-21 17:02:57,173 INFO L226 Difference]: Without dead ends: 119 [2022-11-21 17:02:57,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=1476, Invalid=4224, Unknown=0, NotChecked=0, Total=5700 [2022-11-21 17:02:57,175 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 141 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:57,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 69 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-21 17:02:57,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-21 17:02:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2022-11-21 17:02:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2022-11-21 17:02:57,231 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 56 [2022-11-21 17:02:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:57,232 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2022-11-21 17:02:57,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.75) internal successors, (110), 40 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2022-11-21 17:02:57,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-21 17:02:57,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:57,234 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 35, 1, 1, 1, 1] [2022-11-21 17:02:57,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:57,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:02:57,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash -345230429, now seen corresponding path program 10 times [2022-11-21 17:02:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:02:57,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368986789] [2022-11-21 17:02:57,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:02:57,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:02:57,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:02:57,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:02:57,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-21 17:02:58,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:02:58,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:02:58,142 WARN L261 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 1068 conjunts are in the unsatisfiable core [2022-11-21 17:02:58,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:03:16,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:05:08,459 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 426 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:06:01,438 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 464 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:06:12,970 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 432 DAG size of output: 416 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:06:32,427 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 495 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:06:47,362 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 431 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:07:11,270 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 454 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:07:31,778 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 472 DAG size of output: 399 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:07:59,816 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 483 DAG size of output: 407 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:08:18,786 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 496 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:08:46,803 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 500 DAG size of output: 411 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:09:13,635 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 431 DAG size of output: 403 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:09:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1855 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:15,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:15,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368986789] [2022-11-21 17:09:15,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368986789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:15,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:09:15,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 76 [2022-11-21 17:09:15,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754897734] [2022-11-21 17:09:15,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:15,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-21 17:09:15,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-21 17:09:15,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=5427, Unknown=0, NotChecked=0, Total=5700 [2022-11-21 17:09:15,268 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 76 states, 76 states have (on average 2.8684210526315788) internal successors, (218), 76 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:04,451 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2022-11-21 17:10:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-21 17:10:04,451 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.8684210526315788) internal successors, (218), 76 states have internal predecessors, (218), 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 110 [2022-11-21 17:10:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:04,455 INFO L225 Difference]: With dead ends: 135 [2022-11-21 17:10:04,455 INFO L226 Difference]: Without dead ends: 133 [2022-11-21 17:10:04,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1915 ImplicationChecksByTransitivity, 238.0s TimeCoverageRelationStatistics Valid=764, Invalid=13998, Unknown=0, NotChecked=0, Total=14762 [2022-11-21 17:10:04,458 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 219 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 5395 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 5468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 5395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:04,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 241 Invalid, 5468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 5395 Invalid, 0 Unknown, 0 Unchecked, 23.2s Time] [2022-11-21 17:10:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-21 17:10:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2022-11-21 17:10:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0234375) internal successors, (131), 128 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2022-11-21 17:10:04,521 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 110 [2022-11-21 17:10:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:04,521 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2022-11-21 17:10:04,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.8684210526315788) internal successors, (218), 76 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2022-11-21 17:10:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-21 17:10:04,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:04,524 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 1, 1, 1, 1] [2022-11-21 17:10:04,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:10:04,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:10:04,743 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1691740169, now seen corresponding path program 11 times [2022-11-21 17:10:04,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:10:04,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027457949] [2022-11-21 17:10:04,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:10:04,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:10:04,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:10:04,747 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:10:04,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-21 17:10:06,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2022-11-21 17:10:06,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:10:06,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2133 conjuncts, 702 conjunts are in the unsatisfiable core [2022-11-21 17:10:06,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:10:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:10:19,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:46,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:11:46,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027457949] [2022-11-21 17:11:46,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027457949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:46,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:11:46,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 40] total 75 [2022-11-21 17:11:46,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205868462] [2022-11-21 17:11:46,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-11-21 17:11:46,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:11:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-11-21 17:11:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=5216, Unknown=0, NotChecked=0, Total=5550 [2022-11-21 17:11:46,464 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand has 75 states, 75 states have (on average 2.88) internal successors, (216), 75 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:11,158 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2022-11-21 17:12:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-21 17:12:11,158 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.88) internal successors, (216), 75 states have internal predecessors, (216), 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 113 [2022-11-21 17:12:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:11,160 INFO L225 Difference]: With dead ends: 131 [2022-11-21 17:12:11,160 INFO L226 Difference]: Without dead ends: 129 [2022-11-21 17:12:11,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2609 ImplicationChecksByTransitivity, 74.8s TimeCoverageRelationStatistics Valid=826, Invalid=14426, Unknown=0, NotChecked=0, Total=15252 [2022-11-21 17:12:11,163 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 120 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:11,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 399 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-21 17:12:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-21 17:12:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-21 17:12:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0078125) internal successors, (129), 128 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:11,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2022-11-21 17:12:11,227 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 113 [2022-11-21 17:12:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:11,227 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2022-11-21 17:12:11,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.88) internal successors, (216), 75 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:11,228 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2022-11-21 17:12:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-21 17:12:11,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:11,230 INFO L195 NwaCegarLoop]: trace histogram [42, 41, 41, 1, 1, 1, 1] [2022-11-21 17:12:11,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:11,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:12:11,435 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -22626717, now seen corresponding path program 12 times [2022-11-21 17:12:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:12:11,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784075611] [2022-11-21 17:12:11,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:12:11,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:12:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:12:11,438 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:12:11,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e673cdf-11dc-4bfe-ba46-be0e39c39505/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-21 17:12:13,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2022-11-21 17:12:13,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:13,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 315 conjunts are in the unsatisfiable core [2022-11-21 17:12:13,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:26,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:13:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2542 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:13:00,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:13:00,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784075611] [2022-11-21 17:13:00,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784075611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:13:00,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:13:00,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 88 [2022-11-21 17:13:00,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425670320] [2022-11-21 17:13:00,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:13:00,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-11-21 17:13:00,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:13:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-11-21 17:13:00,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1857, Invalid=5799, Unknown=0, NotChecked=0, Total=7656 [2022-11-21 17:13:00,787 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand has 88 states, 88 states have (on average 2.8863636363636362) internal successors, (254), 88 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:13:32,165 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 847 DAG size of output: 757 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:13:42,953 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 702 DAG size of output: 663 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:13:53,714 WARN L233 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 686 DAG size of output: 648 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:14:04,076 WARN L233 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 670 DAG size of output: 633 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:14:14,323 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 654 DAG size of output: 618 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:14:23,975 WARN L233 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 638 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:14:33,619 WARN L233 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 622 DAG size of output: 588 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:14:42,778 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 606 DAG size of output: 573 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:14:51,326 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 590 DAG size of output: 558 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)