./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:22:36,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:22:36,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:22:36,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:22:36,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:22:36,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:22:36,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:22:36,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:22:36,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:22:36,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:22:36,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:22:36,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:22:36,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:22:36,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:22:36,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:22:36,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:22:36,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:22:36,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:22:36,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:22:36,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:22:36,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:22:36,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:22:36,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:22:36,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:22:36,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:22:36,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:22:36,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:22:36,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:22:36,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:22:36,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:22:36,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:22:36,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:22:36,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:22:36,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:22:36,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:22:36,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:22:36,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:22:36,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:22:36,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:22:36,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:22:36,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:22:36,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:22:36,725 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:22:36,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:22:36,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:22:36,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:22:36,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:22:36,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:22:36,739 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:22:36,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:22:36,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:22:36,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:22:36,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:22:36,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:22:36,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:22:36,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:22:36,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:22:36,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:22:36,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:22:36,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:22:36,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:22:36,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:22:36,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:22:36,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:22:36,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:22:36,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:22:36,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:22:36,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:22:36,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:22:36,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:22:36,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:22:36,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:22:36,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:22:36,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:22:36,750 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_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 [2021-11-22 16:22:37,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:22:37,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:22:37,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:22:37,188 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:22:37,189 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:22:37,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2021-11-22 16:22:37,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/data/56d82540b/c92082cce14e49e7b4336d9eedab4f75/FLAG442ed2ab5 [2021-11-22 16:22:38,167 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:22:38,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2021-11-22 16:22:38,209 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/data/56d82540b/c92082cce14e49e7b4336d9eedab4f75/FLAG442ed2ab5 [2021-11-22 16:22:38,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/data/56d82540b/c92082cce14e49e7b4336d9eedab4f75 [2021-11-22 16:22:38,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:22:38,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:22:38,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:22:38,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:22:38,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:22:38,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:22:38" (1/1) ... [2021-11-22 16:22:38,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f19a900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:38, skipping insertion in model container [2021-11-22 16:22:38,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:22:38" (1/1) ... [2021-11-22 16:22:38,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:22:38,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:22:39,113 WARN L230 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_3ae033d4-3f37-4661-995b-ce415b0e078e/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c[1762,1775] [2021-11-22 16:22:39,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:22:39,671 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:22:39,696 WARN L230 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_3ae033d4-3f37-4661-995b-ce415b0e078e/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c[1762,1775] [2021-11-22 16:22:40,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:22:40,062 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:22:40,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40 WrapperNode [2021-11-22 16:22:40,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:22:40,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:22:40,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:22:40,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:22:40,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:40,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:44,392 INFO L137 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 797, calls inlined = 10208, statements flattened = 106393 [2021-11-22 16:22:44,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:22:44,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:22:44,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:22:44,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:22:44,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:44,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:45,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:45,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:48,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:49,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:49,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:49,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:22:49,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:22:49,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:22:49,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:22:49,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (1/1) ... [2021-11-22 16:22:49,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:22:49,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:22:49,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:22:49,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:22:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:22:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 16:22:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 16:22:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 16:22:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 16:22:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:22:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:22:49,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:22:50,697 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:22:50,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:26:28,004 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:26:28,163 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:26:28,164 INFO L301 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-22 16:26:28,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:26:28 BoogieIcfgContainer [2021-11-22 16:26:28,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:26:28,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:26:28,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:26:28,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:26:28,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:22:38" (1/3) ... [2021-11-22 16:26:28,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc461b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:26:28, skipping insertion in model container [2021-11-22 16:26:28,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:22:40" (2/3) ... [2021-11-22 16:26:28,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc461b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:26:28, skipping insertion in model container [2021-11-22 16:26:28,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:26:28" (3/3) ... [2021-11-22 16:26:28,230 INFO L111 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M1.c [2021-11-22 16:26:28,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:26:28,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-11-22 16:26:28,427 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:26:28,436 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 16:26:28,436 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-11-22 16:26:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 37588 states, 37560 states have (on average 1.5100372736954206) internal successors, (56717), 37587 states have internal predecessors, (56717), 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) [2021-11-22 16:26:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-22 16:26:29,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:29,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:26:29,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:26:29,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:29,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2105420716, now seen corresponding path program 1 times [2021-11-22 16:26:29,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:26:29,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261350013] [2021-11-22 16:26:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:29,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:26:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:30,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:26:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261350013] [2021-11-22 16:26:30,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261350013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:30,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:30,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:26:30,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118612696] [2021-11-22 16:26:30,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:30,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:26:30,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:26:30,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:26:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:26:30,201 INFO L87 Difference]: Start difference. First operand has 37588 states, 37560 states have (on average 1.5100372736954206) internal successors, (56717), 37587 states have internal predecessors, (56717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 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) [2021-11-22 16:26:32,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:32,028 INFO L93 Difference]: Finished difference Result 75171 states and 113428 transitions. [2021-11-22 16:26:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:26:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 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 462 [2021-11-22 16:26:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:32,450 INFO L225 Difference]: With dead ends: 75171 [2021-11-22 16:26:32,450 INFO L226 Difference]: Without dead ends: 37582 [2021-11-22 16:26:32,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:26:32,553 INFO L933 BasicCegarLoop]: 47627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:32,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47627 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:26:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37582 states. [2021-11-22 16:26:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37582 to 37582. [2021-11-22 16:26:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37582 states, 37555 states have (on average 1.2680335507921714) internal successors, (47621), 37581 states have internal predecessors, (47621), 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) [2021-11-22 16:26:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37582 states to 37582 states and 47621 transitions. [2021-11-22 16:26:33,948 INFO L78 Accepts]: Start accepts. Automaton has 37582 states and 47621 transitions. Word has length 462 [2021-11-22 16:26:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:33,951 INFO L470 AbstractCegarLoop]: Abstraction has 37582 states and 47621 transitions. [2021-11-22 16:26:33,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 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) [2021-11-22 16:26:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 37582 states and 47621 transitions. [2021-11-22 16:26:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-22 16:26:33,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:33,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:26:33,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:26:33,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:26:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1505919912, now seen corresponding path program 1 times [2021-11-22 16:26:33,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:26:33,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805165752] [2021-11-22 16:26:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:33,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:26:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:35,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:26:35,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805165752] [2021-11-22 16:26:35,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805165752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:35,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:35,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:26:35,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127046444] [2021-11-22 16:26:35,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:35,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:26:35,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:26:35,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:26:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:26:35,347 INFO L87 Difference]: Start difference. First operand 37582 states and 47621 transitions. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2021-11-22 16:26:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:37,281 INFO L93 Difference]: Finished difference Result 73295 states and 92975 transitions. [2021-11-22 16:26:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:26:37,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 462 [2021-11-22 16:26:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:37,392 INFO L225 Difference]: With dead ends: 73295 [2021-11-22 16:26:37,393 INFO L226 Difference]: Without dead ends: 37582 [2021-11-22 16:26:37,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:26:37,442 INFO L933 BasicCegarLoop]: 47573 mSDtfsCounter, 35616 mSDsluCounter, 11765 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35616 SdHoareTripleChecker+Valid, 59338 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:37,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35616 Valid, 59338 Invalid, 262 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [118 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 16:26:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37582 states. [2021-11-22 16:26:38,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37582 to 37582. [2021-11-22 16:26:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37582 states, 37555 states have (on average 1.2673944880841432) internal successors, (47597), 37581 states have internal predecessors, (47597), 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) [2021-11-22 16:26:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37582 states to 37582 states and 47597 transitions. [2021-11-22 16:26:38,642 INFO L78 Accepts]: Start accepts. Automaton has 37582 states and 47597 transitions. Word has length 462 [2021-11-22 16:26:38,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:38,645 INFO L470 AbstractCegarLoop]: Abstraction has 37582 states and 47597 transitions. [2021-11-22 16:26:38,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2021-11-22 16:26:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 37582 states and 47597 transitions. [2021-11-22 16:26:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-22 16:26:38,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:38,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:26:38,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:26:38,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:26:38,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:38,671 INFO L85 PathProgramCache]: Analyzing trace with hash -540237387, now seen corresponding path program 1 times [2021-11-22 16:26:38,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:26:38,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960732688] [2021-11-22 16:26:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:38,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:26:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:39,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:26:39,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960732688] [2021-11-22 16:26:39,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960732688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:39,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:39,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:26:39,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610329381] [2021-11-22 16:26:39,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:39,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:26:39,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:26:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:26:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:26:39,783 INFO L87 Difference]: Start difference. First operand 37582 states and 47597 transitions. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2021-11-22 16:26:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:45,188 INFO L93 Difference]: Finished difference Result 74359 states and 94282 transitions. [2021-11-22 16:26:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:26:45,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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 463 [2021-11-22 16:26:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:45,314 INFO L225 Difference]: With dead ends: 74359 [2021-11-22 16:26:45,315 INFO L226 Difference]: Without dead ends: 37475 [2021-11-22 16:26:45,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:26:45,380 INFO L933 BasicCegarLoop]: 46929 mSDtfsCounter, 50891 mSDsluCounter, 43323 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50891 SdHoareTripleChecker+Valid, 90252 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:45,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50891 Valid, 90252 Invalid, 1180 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [125 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-22 16:26:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37475 states. [2021-11-22 16:26:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37475 to 37473. [2021-11-22 16:26:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37473 states, 37446 states have (on average 1.2666773487154837) internal successors, (47432), 37472 states have internal predecessors, (47432), 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) [2021-11-22 16:26:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37473 states to 37473 states and 47432 transitions. [2021-11-22 16:26:46,233 INFO L78 Accepts]: Start accepts. Automaton has 37473 states and 47432 transitions. Word has length 463 [2021-11-22 16:26:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:46,234 INFO L470 AbstractCegarLoop]: Abstraction has 37473 states and 47432 transitions. [2021-11-22 16:26:46,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2021-11-22 16:26:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 37473 states and 47432 transitions. [2021-11-22 16:26:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-22 16:26:46,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:46,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:26:46,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:26:46,250 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:26:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash 140245929, now seen corresponding path program 1 times [2021-11-22 16:26:46,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:26:46,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825189076] [2021-11-22 16:26:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:46,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:26:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:47,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:26:47,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825189076] [2021-11-22 16:26:47,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825189076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:47,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:47,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:26:47,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244368201] [2021-11-22 16:26:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:47,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:26:47,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:26:47,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:26:47,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:26:47,222 INFO L87 Difference]: Start difference. First operand 37473 states and 47432 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2021-11-22 16:26:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:48,659 INFO L93 Difference]: Finished difference Result 71628 states and 90781 transitions. [2021-11-22 16:26:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:26:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 463 [2021-11-22 16:26:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:48,751 INFO L225 Difference]: With dead ends: 71628 [2021-11-22 16:26:48,752 INFO L226 Difference]: Without dead ends: 34739 [2021-11-22 16:26:48,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:26:48,798 INFO L933 BasicCegarLoop]: 43928 mSDtfsCounter, 0 mSDsluCounter, 43789 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87717 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:48,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 87717 Invalid, 209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 16:26:48,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34739 states. [2021-11-22 16:26:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34739 to 34737. [2021-11-22 16:26:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34737 states, 34710 states have (on average 1.266263324690291) internal successors, (43952), 34736 states have internal predecessors, (43952), 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) [2021-11-22 16:26:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34737 states to 34737 states and 43952 transitions. [2021-11-22 16:26:49,855 INFO L78 Accepts]: Start accepts. Automaton has 34737 states and 43952 transitions. Word has length 463 [2021-11-22 16:26:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:49,857 INFO L470 AbstractCegarLoop]: Abstraction has 34737 states and 43952 transitions. [2021-11-22 16:26:49,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2021-11-22 16:26:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 34737 states and 43952 transitions. [2021-11-22 16:26:49,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-22 16:26:49,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:49,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:26:49,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:26:49,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:26:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 114758158, now seen corresponding path program 1 times [2021-11-22 16:26:49,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:26:49,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707525469] [2021-11-22 16:26:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:49,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:26:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:50,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:26:50,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707525469] [2021-11-22 16:26:50,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707525469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:50,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:50,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:26:50,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478643171] [2021-11-22 16:26:50,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:50,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:26:50,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:26:50,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:26:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:26:50,474 INFO L87 Difference]: Start difference. First operand 34737 states and 43952 transitions. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2021-11-22 16:26:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:53,100 INFO L93 Difference]: Finished difference Result 75546 states and 95448 transitions. [2021-11-22 16:26:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:26:53,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 464 [2021-11-22 16:26:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:53,226 INFO L225 Difference]: With dead ends: 75546 [2021-11-22 16:26:53,226 INFO L226 Difference]: Without dead ends: 74041 [2021-11-22 16:26:53,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:26:53,269 INFO L933 BasicCegarLoop]: 43905 mSDtfsCounter, 120413 mSDsluCounter, 55417 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120413 SdHoareTripleChecker+Valid, 99322 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:53,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120413 Valid, 99322 Invalid, 308 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [133 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 16:26:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74041 states. [2021-11-22 16:26:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74041 to 40457. [2021-11-22 16:26:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40457 states, 40430 states have (on average 1.2628246351719021) internal successors, (51056), 40456 states have internal predecessors, (51056), 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) [2021-11-22 16:26:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40457 states to 40457 states and 51056 transitions. [2021-11-22 16:26:54,551 INFO L78 Accepts]: Start accepts. Automaton has 40457 states and 51056 transitions. Word has length 464 [2021-11-22 16:26:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:54,552 INFO L470 AbstractCegarLoop]: Abstraction has 40457 states and 51056 transitions. [2021-11-22 16:26:54,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2021-11-22 16:26:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand 40457 states and 51056 transitions. [2021-11-22 16:26:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-11-22 16:26:54,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:54,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:26:54,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:26:54,572 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:26:54,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1095165083, now seen corresponding path program 1 times [2021-11-22 16:26:54,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:26:54,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506614934] [2021-11-22 16:26:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:54,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:26:54,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:26:54,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093743683] [2021-11-22 16:26:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:54,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:26:54,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:26:54,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:26:54,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:26:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:55,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2332 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 16:26:55,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:26:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:26:57,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:26:57,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:26:57,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506614934] [2021-11-22 16:26:57,567 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:26:57,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093743683] [2021-11-22 16:26:57,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093743683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:57,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:57,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:26:57,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619905497] [2021-11-22 16:26:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:57,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:26:57,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:26:57,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:26:57,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:26:57,571 INFO L87 Difference]: Start difference. First operand 40457 states and 51056 transitions. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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) [2021-11-22 16:27:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:04,174 INFO L93 Difference]: Finished difference Result 71271 states and 90011 transitions. [2021-11-22 16:27:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:27:04,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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 498 [2021-11-22 16:27:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:04,228 INFO L225 Difference]: With dead ends: 71271 [2021-11-22 16:27:04,229 INFO L226 Difference]: Without dead ends: 32208 [2021-11-22 16:27:04,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:27:04,253 INFO L933 BasicCegarLoop]: 35598 mSDtfsCounter, 35333 mSDsluCounter, 71597 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35333 SdHoareTripleChecker+Valid, 107195 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:04,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35333 Valid, 107195 Invalid, 1958 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [271 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-22 16:27:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32208 states. [2021-11-22 16:27:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32208 to 32135. [2021-11-22 16:27:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32135 states, 32108 states have (on average 1.260464681699265) internal successors, (40471), 32134 states have internal predecessors, (40471), 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) [2021-11-22 16:27:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32135 states to 32135 states and 40471 transitions. [2021-11-22 16:27:05,241 INFO L78 Accepts]: Start accepts. Automaton has 32135 states and 40471 transitions. Word has length 498 [2021-11-22 16:27:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:05,243 INFO L470 AbstractCegarLoop]: Abstraction has 32135 states and 40471 transitions. [2021-11-22 16:27:05,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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) [2021-11-22 16:27:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 32135 states and 40471 transitions. [2021-11-22 16:27:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-11-22 16:27:05,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:05,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:05,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:27:05,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:27:05,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:27:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1822769027, now seen corresponding path program 1 times [2021-11-22 16:27:05,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:05,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276410433] [2021-11-22 16:27:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:05,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:05,731 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:27:05,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051443641] [2021-11-22 16:27:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:05,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:27:05,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:27:05,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:27:05,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 16:27:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:06,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:27:06,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:27:08,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:27:08,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:08,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276410433] [2021-11-22 16:27:08,009 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:27:08,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051443641] [2021-11-22 16:27:08,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051443641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:08,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:08,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:27:08,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178735833] [2021-11-22 16:27:08,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:08,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:27:08,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:27:08,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:08,014 INFO L87 Difference]: Start difference. First operand 32135 states and 40471 transitions. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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) [2021-11-22 16:27:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:13,828 INFO L93 Difference]: Finished difference Result 64104 states and 80820 transitions. [2021-11-22 16:27:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:27:13,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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 498 [2021-11-22 16:27:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:13,890 INFO L225 Difference]: With dead ends: 64104 [2021-11-22 16:27:13,890 INFO L226 Difference]: Without dead ends: 33250 [2021-11-22 16:27:13,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:27:13,921 INFO L933 BasicCegarLoop]: 36931 mSDtfsCounter, 43799 mSDsluCounter, 67327 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43799 SdHoareTripleChecker+Valid, 104258 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:13,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43799 Valid, 104258 Invalid, 1830 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [169 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-22 16:27:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33250 states. [2021-11-22 16:27:14,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33250 to 32135. [2021-11-22 16:27:14,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32135 states, 32108 states have (on average 1.2597172044350318) internal successors, (40447), 32134 states have internal predecessors, (40447), 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) [2021-11-22 16:27:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32135 states to 32135 states and 40447 transitions. [2021-11-22 16:27:14,884 INFO L78 Accepts]: Start accepts. Automaton has 32135 states and 40447 transitions. Word has length 498 [2021-11-22 16:27:14,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:14,884 INFO L470 AbstractCegarLoop]: Abstraction has 32135 states and 40447 transitions. [2021-11-22 16:27:14,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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) [2021-11-22 16:27:14,885 INFO L276 IsEmpty]: Start isEmpty. Operand 32135 states and 40447 transitions. [2021-11-22 16:27:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2021-11-22 16:27:14,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:14,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:14,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:27:15,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 16:27:15,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:27:15,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:15,109 INFO L85 PathProgramCache]: Analyzing trace with hash 67059727, now seen corresponding path program 1 times [2021-11-22 16:27:15,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:15,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918144926] [2021-11-22 16:27:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:15,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:15,315 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:27:15,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124056918] [2021-11-22 16:27:15,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:15,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:27:15,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:27:15,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:27:15,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 16:27:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:16,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 16:27:16,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:27:17,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:27:17,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:17,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918144926] [2021-11-22 16:27:17,224 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:27:17,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124056918] [2021-11-22 16:27:17,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124056918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:17,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:17,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:27:17,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132625070] [2021-11-22 16:27:17,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:17,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:27:17,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:27:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:17,228 INFO L87 Difference]: Start difference. First operand 32135 states and 40447 transitions. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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) [2021-11-22 16:27:22,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:22,990 INFO L93 Difference]: Finished difference Result 60369 states and 76069 transitions. [2021-11-22 16:27:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:27:22,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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 498 [2021-11-22 16:27:22,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:23,036 INFO L225 Difference]: With dead ends: 60369 [2021-11-22 16:27:23,037 INFO L226 Difference]: Without dead ends: 29401 [2021-11-22 16:27:23,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:27:23,072 INFO L933 BasicCegarLoop]: 32094 mSDtfsCounter, 31811 mSDsluCounter, 64709 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31811 SdHoareTripleChecker+Valid, 96803 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:23,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31811 Valid, 96803 Invalid, 1788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-22 16:27:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29401 states. [2021-11-22 16:27:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29401 to 29399. [2021-11-22 16:27:23,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29399 states, 29372 states have (on average 1.2585795996186844) internal successors, (36967), 29398 states have internal predecessors, (36967), 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) [2021-11-22 16:27:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29399 states to 29399 states and 36967 transitions. [2021-11-22 16:27:23,894 INFO L78 Accepts]: Start accepts. Automaton has 29399 states and 36967 transitions. Word has length 498 [2021-11-22 16:27:23,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:23,894 INFO L470 AbstractCegarLoop]: Abstraction has 29399 states and 36967 transitions. [2021-11-22 16:27:23,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 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) [2021-11-22 16:27:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 29399 states and 36967 transitions. [2021-11-22 16:27:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2021-11-22 16:27:23,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:23,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:23,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 16:27:24,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-22 16:27:24,108 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:27:24,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1211020664, now seen corresponding path program 1 times [2021-11-22 16:27:24,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:24,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917767249] [2021-11-22 16:27:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:24,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:24,329 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:27:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810486211] [2021-11-22 16:27:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:24,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:27:24,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:27:24,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:27:24,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 16:27:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:25,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2332 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:27:25,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:27:26,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:27:26,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:26,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917767249] [2021-11-22 16:27:26,866 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:27:26,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810486211] [2021-11-22 16:27:26,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810486211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:26,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:26,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:27:26,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289619542] [2021-11-22 16:27:26,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:26,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:27:26,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:26,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:27:26,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:26,871 INFO L87 Difference]: Start difference. First operand 29399 states and 36967 transitions. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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) [2021-11-22 16:27:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:33,075 INFO L93 Difference]: Finished difference Result 58633 states and 73813 transitions. [2021-11-22 16:27:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:27:33,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 499 [2021-11-22 16:27:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:33,108 INFO L225 Difference]: With dead ends: 58633 [2021-11-22 16:27:33,109 INFO L226 Difference]: Without dead ends: 30514 [2021-11-22 16:27:33,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:27:33,125 INFO L933 BasicCegarLoop]: 33379 mSDtfsCounter, 40096 mSDsluCounter, 60391 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40096 SdHoareTripleChecker+Valid, 93770 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:33,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40096 Valid, 93770 Invalid, 1926 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [217 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-22 16:27:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30514 states. [2021-11-22 16:27:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30514 to 29399. [2021-11-22 16:27:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29399 states, 29372 states have (on average 1.2561623314721504) internal successors, (36896), 29398 states have internal predecessors, (36896), 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) [2021-11-22 16:27:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29399 states to 29399 states and 36896 transitions. [2021-11-22 16:27:33,633 INFO L78 Accepts]: Start accepts. Automaton has 29399 states and 36896 transitions. Word has length 499 [2021-11-22 16:27:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:33,634 INFO L470 AbstractCegarLoop]: Abstraction has 29399 states and 36896 transitions. [2021-11-22 16:27:33,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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) [2021-11-22 16:27:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 29399 states and 36896 transitions. [2021-11-22 16:27:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-22 16:27:33,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:33,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:33,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:27:33,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:27:33,860 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-22 16:27:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 980614079, now seen corresponding path program 1 times [2021-11-22 16:27:33,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465909251] [2021-11-22 16:27:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:33,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:34,072 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:27:34,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877652894] [2021-11-22 16:27:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:34,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:27:34,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:27:34,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:27:34,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ae033d4-3f37-4661-995b-ce415b0e078e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 16:27:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:35,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 16:27:35,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:36,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-11-22 16:27:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:27:36,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:27:36,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:36,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465909251] [2021-11-22 16:27:36,286 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:27:36,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877652894] [2021-11-22 16:27:36,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877652894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:36,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:36,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:27:36,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514775996] [2021-11-22 16:27:36,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:36,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:27:36,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:27:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:27:36,289 INFO L87 Difference]: Start difference. First operand 29399 states and 36896 transitions. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2021-11-22 16:27:38,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 16:27:40,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 16:27:42,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 16:27:47,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 16:27:49,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 16:27:52,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []