./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b1bdb7a6e4a9f0cd47753d9d03eeb7f0c20e1fb500e8ba61cc5b8c496497eb3f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:31:01,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:31:01,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:31:01,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:31:01,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:31:01,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:31:01,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:31:01,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:31:01,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:31:01,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:31:01,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:31:01,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:31:01,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:31:01,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:31:01,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:31:01,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:31:01,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:31:01,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:31:01,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:31:01,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:31:01,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:31:01,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:31:01,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:31:01,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:31:01,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:31:01,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:31:01,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:31:01,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:31:01,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:31:01,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:31:01,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:31:01,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:31:01,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:31:01,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:31:01,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:31:01,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:31:01,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:31:01,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:31:01,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:31:01,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:31:01,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:31:01,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:31:01,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:31:01,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:31:01,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:31:01,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:31:01,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:31:01,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:31:01,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:31:01,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:31:01,537 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:31:01,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:31:01,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:31:01,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:31:01,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:31:01,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:31:01,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:31:01,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:31:01,540 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:31:01,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:31:01,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:31:01,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:31:01,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:31:01,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:01,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:31:01,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:31:01,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:31:01,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:31:01,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:31:01,551 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:31:01,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:31:01,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:31:01,552 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_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1bdb7a6e4a9f0cd47753d9d03eeb7f0c20e1fb500e8ba61cc5b8c496497eb3f [2022-11-16 11:31:01,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:31:01,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:31:01,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:31:01,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:31:01,848 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:31:01,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-func-interl.c [2022-11-16 11:31:01,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/data/d104d6d59/1460833e3f9942e3af8fe7035e17c2f2/FLAG8e197b451 [2022-11-16 11:31:02,726 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:31:02,726 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-func-interl.c [2022-11-16 11:31:02,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/data/d104d6d59/1460833e3f9942e3af8fe7035e17c2f2/FLAG8e197b451 [2022-11-16 11:31:02,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/data/d104d6d59/1460833e3f9942e3af8fe7035e17c2f2 [2022-11-16 11:31:02,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:31:02,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:31:02,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:02,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:31:02,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:31:02,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:02" (1/1) ... [2022-11-16 11:31:02,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7746987f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:02, skipping insertion in model container [2022-11-16 11:31:02,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:31:02" (1/1) ... [2022-11-16 11:31:02,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:31:02,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:31:03,178 WARN L229 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_c5a57ed9-9c17-470e-9ca5-f400b4789520/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-func-interl.c[1014,1027] [2022-11-16 11:31:03,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:03,758 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:31:03,772 WARN L229 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_c5a57ed9-9c17-470e-9ca5-f400b4789520/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.collision.4.prop1-func-interl.c[1014,1027] [2022-11-16 11:31:04,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:31:04,045 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:31:04,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04 WrapperNode [2022-11-16 11:31:04,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:31:04,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:04,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:31:04,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:31:04,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,432 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5158 [2022-11-16 11:31:04,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:31:04,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:31:04,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:31:04,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:31:04,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:31:04,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:31:04,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:31:04,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:31:04,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (1/1) ... [2022-11-16 11:31:04,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:31:04,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:04,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:31:04,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:31:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:31:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:31:05,479 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:31:05,482 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:31:18,569 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:31:18,584 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:31:18,585 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:31:18,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:18 BoogieIcfgContainer [2022-11-16 11:31:18,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:31:18,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:31:18,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:31:18,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:31:18,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:31:02" (1/3) ... [2022-11-16 11:31:18,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262393c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:31:18, skipping insertion in model container [2022-11-16 11:31:18,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:31:04" (2/3) ... [2022-11-16 11:31:18,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262393c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:31:18, skipping insertion in model container [2022-11-16 11:31:18,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:31:18" (3/3) ... [2022-11-16 11:31:18,599 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.collision.4.prop1-func-interl.c [2022-11-16 11:31:18,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:31:18,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:31:18,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:31:18,708 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4a075364, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:31:18,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:31:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 879 states have (on average 1.664391353811149) internal successors, (1463), 880 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 11:31:18,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:18,727 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:31:18,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:18,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:18,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1357012319, now seen corresponding path program 1 times [2022-11-16 11:31:18,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204649808] [2022-11-16 11:31:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:18,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:19,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:19,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204649808] [2022-11-16 11:31:19,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204649808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:19,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:19,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:31:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724951675] [2022-11-16 11:31:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:19,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:31:19,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:31:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:31:19,547 INFO L87 Difference]: Start difference. First operand has 881 states, 879 states have (on average 1.664391353811149) internal successors, (1463), 880 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:19,767 INFO L93 Difference]: Finished difference Result 2743 states and 4567 transitions. [2022-11-16 11:31:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:31:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-11-16 11:31:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:19,788 INFO L225 Difference]: With dead ends: 2743 [2022-11-16 11:31:19,789 INFO L226 Difference]: Without dead ends: 1864 [2022-11-16 11:31:19,795 INFO L412 NwaCegarLoop]: 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 [2022-11-16 11:31:19,798 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 4347 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 3473 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:19,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4347 Valid, 3473 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:31:19,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-11-16 11:31:19,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 879. [2022-11-16 11:31:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 878 states have (on average 1.6617312072892938) internal successors, (1459), 878 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1459 transitions. [2022-11-16 11:31:19,886 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1459 transitions. Word has length 81 [2022-11-16 11:31:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:19,887 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1459 transitions. [2022-11-16 11:31:19,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1459 transitions. [2022-11-16 11:31:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 11:31:19,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:19,892 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:31:19,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:31:19,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:19,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash -880506085, now seen corresponding path program 1 times [2022-11-16 11:31:19,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:19,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373951325] [2022-11-16 11:31:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:19,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:20,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:20,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373951325] [2022-11-16 11:31:20,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373951325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:20,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:20,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:31:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066115320] [2022-11-16 11:31:20,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:20,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:31:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:31:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:31:20,257 INFO L87 Difference]: Start difference. First operand 879 states and 1459 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:20,484 INFO L93 Difference]: Finished difference Result 3606 states and 5995 transitions. [2022-11-16 11:31:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:31:20,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 82 [2022-11-16 11:31:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:20,496 INFO L225 Difference]: With dead ends: 3606 [2022-11-16 11:31:20,496 INFO L226 Difference]: Without dead ends: 2729 [2022-11-16 11:31:20,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:31:20,500 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 5717 mSDsluCounter, 4533 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5717 SdHoareTripleChecker+Valid, 6170 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:20,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5717 Valid, 6170 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:31:20,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2022-11-16 11:31:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 992. [2022-11-16 11:31:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 991 states have (on average 1.6609485368314834) internal successors, (1646), 991 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1646 transitions. [2022-11-16 11:31:20,542 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1646 transitions. Word has length 82 [2022-11-16 11:31:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:20,543 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1646 transitions. [2022-11-16 11:31:20,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1646 transitions. [2022-11-16 11:31:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2022-11-16 11:31:20,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:20,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:20,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:31:20,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1856892467, now seen corresponding path program 1 times [2022-11-16 11:31:20,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:20,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107751311] [2022-11-16 11:31:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:20,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:20,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:31:20,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48986159] [2022-11-16 11:31:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:20,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:20,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:20,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:20,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:31:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:23,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 5810 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:31:23,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:24,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:31:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-16 11:31:24,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107751311] [2022-11-16 11:31:24,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:31:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48986159] [2022-11-16 11:31:24,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48986159] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:31:24,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:31:24,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2022-11-16 11:31:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932203465] [2022-11-16 11:31:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:24,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:31:24,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:24,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:31:24,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:31:24,495 INFO L87 Difference]: Start difference. First operand 992 states and 1646 transitions. Second operand has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:24,643 INFO L93 Difference]: Finished difference Result 3611 states and 6000 transitions. [2022-11-16 11:31:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:31:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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 665 [2022-11-16 11:31:24,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:24,656 INFO L225 Difference]: With dead ends: 3611 [2022-11-16 11:31:24,657 INFO L226 Difference]: Without dead ends: 2734 [2022-11-16 11:31:24,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:31:24,660 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 4337 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 4718 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:24,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4337 Valid, 4718 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:31:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2022-11-16 11:31:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 992. [2022-11-16 11:31:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 991 states have (on average 1.6609485368314834) internal successors, (1646), 991 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1646 transitions. [2022-11-16 11:31:24,701 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1646 transitions. Word has length 665 [2022-11-16 11:31:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:24,704 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1646 transitions. [2022-11-16 11:31:24,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1646 transitions. [2022-11-16 11:31:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2022-11-16 11:31:24,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:24,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:24,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:31:24,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 11:31:24,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1516872159, now seen corresponding path program 1 times [2022-11-16 11:31:24,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:24,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623827003] [2022-11-16 11:31:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:24,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:25,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:31:25,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156771591] [2022-11-16 11:31:25,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:25,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:25,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:25,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:25,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:31:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:27,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 5813 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 11:31:27,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:30,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:31:30,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623827003] [2022-11-16 11:31:30,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:31:30,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156771591] [2022-11-16 11:31:30,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156771591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:31:30,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:31:30,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:31:30,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385707304] [2022-11-16 11:31:30,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:31:30,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:31:30,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:31:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:31:30,295 INFO L87 Difference]: Start difference. First operand 992 states and 1646 transitions. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:31:35,137 INFO L93 Difference]: Finished difference Result 2632 states and 4370 transitions. [2022-11-16 11:31:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:31:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 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 666 [2022-11-16 11:31:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:31:35,145 INFO L225 Difference]: With dead ends: 2632 [2022-11-16 11:31:35,146 INFO L226 Difference]: Without dead ends: 1753 [2022-11-16 11:31:35,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:31:35,151 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1370 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 3559 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 3560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:31:35,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 811 Invalid, 3560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3559 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 11:31:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-11-16 11:31:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 999. [2022-11-16 11:31:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.656312625250501) internal successors, (1653), 998 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1653 transitions. [2022-11-16 11:31:35,190 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1653 transitions. Word has length 666 [2022-11-16 11:31:35,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:31:35,191 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1653 transitions. [2022-11-16 11:31:35,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:31:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1653 transitions. [2022-11-16 11:31:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2022-11-16 11:31:35,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:31:35,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:31:35,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:31:35,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:35,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:31:35,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:31:35,436 INFO L85 PathProgramCache]: Analyzing trace with hash 399003779, now seen corresponding path program 1 times [2022-11-16 11:31:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:31:35,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483252927] [2022-11-16 11:31:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:31:35,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:31:35,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489054182] [2022-11-16 11:31:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:31:35,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:31:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:31:35,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:31:35,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:31:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:31:38,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 5816 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-16 11:31:38,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:45,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:31:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:31:56,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:31:56,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483252927] [2022-11-16 11:31:56,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:31:56,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489054182] [2022-11-16 11:31:56,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489054182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:31:56,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:31:56,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2022-11-16 11:31:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842448531] [2022-11-16 11:31:56,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:31:56,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:31:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:31:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:31:56,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:31:56,587 INFO L87 Difference]: Start difference. First operand 999 states and 1653 transitions. Second operand has 27 states, 27 states have (on average 49.25925925925926) internal successors, (1330), 27 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:32:31,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:33:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:23,126 INFO L93 Difference]: Finished difference Result 20836 states and 34645 transitions. [2022-11-16 11:33:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-16 11:33:23,128 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 49.25925925925926) internal successors, (1330), 27 states have internal predecessors, (1330), 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 667 [2022-11-16 11:33:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:23,199 INFO L225 Difference]: With dead ends: 20836 [2022-11-16 11:33:23,199 INFO L226 Difference]: Without dead ends: 19957 [2022-11-16 11:33:23,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1390 GetRequests, 1307 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1512, Invalid=5628, Unknown=0, NotChecked=0, Total=7140 [2022-11-16 11:33:23,207 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 106345 mSDsluCounter, 16980 mSDsCounter, 0 mSdLazyCounter, 66905 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106345 SdHoareTripleChecker+Valid, 17826 SdHoareTripleChecker+Invalid, 66955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 66905 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:23,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106345 Valid, 17826 Invalid, 66955 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [49 Valid, 66905 Invalid, 1 Unknown, 0 Unchecked, 77.4s Time] [2022-11-16 11:33:23,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19957 states. [2022-11-16 11:33:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19957 to 2111. [2022-11-16 11:33:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2110 states have (on average 1.6559241706161136) internal successors, (3494), 2110 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3494 transitions. [2022-11-16 11:33:23,390 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3494 transitions. Word has length 667 [2022-11-16 11:33:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:23,391 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 3494 transitions. [2022-11-16 11:33:23,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 49.25925925925926) internal successors, (1330), 27 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3494 transitions. [2022-11-16 11:33:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-11-16 11:33:23,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:23,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:23,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:23,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:23,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:23,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1210854071, now seen corresponding path program 1 times [2022-11-16 11:33:23,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:23,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711435598] [2022-11-16 11:33:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:23,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:23,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:23,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2509639] [2022-11-16 11:33:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:23,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:23,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:23,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:23,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5a57ed9-9c17-470e-9ca5-f400b4789520/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:34:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:34:02,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 5819 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-16 11:34:02,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:34:15,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:54,342 WARN L233 SmtUtils]: Spent 29.73s on a formula simplification. DAG size of input: 4176 DAG size of output: 3972 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)